next 16.0.0-beta.0

v16.0.0-beta.0

on Node.js NPM

Core Changes

• Development: Don't import app-router / hot-reloader through next/link in application code: #83656
• Remove clientParamParsing requirement from RDC for Navigations: #83661
• Upgrade React from 6b70072c-20250909 to 886b3d36-20250910: #83650
• Turbopack: Use readFileSync / writeFileSync for manifest writing: #83694
• Upgrade React from 886b3d36-20250910 to f3a80361-20250911: #83696
• Don't create client-side debug channel if the feature is disabled: #83699
• fix: dev should produce the correct default fallback regex to match builds/Turbopack: #83701
• [devtool] fix overlay styles are missing: #83721
• Revert "Remove clientParamParsing requirement from RDC for Navigations": #83725
• Only enable unhandledRejection filtering when opted in: #83726
• Fix index data route for adapter build-complete: #83730
• Remove leading underscore for unhandledRejection envvar: #83732
• Upgrade React from f3a80361-20250911 to 93d7aa69-20250912: #83729
• Upgrade React from 93d7aa69-20250912 to 8a8e9a7e-20250912: #83742
• Fix reentrancy of unhandledRejection filtering: #83741
• Fix type for unhandled rejection handler process.removeListener: #83748
• [OTel] fix: Root span name should not include high cardinality URL: #75416
• Turbopack: Remove matchers.reload() call on each request: #83720
• [Breaking] Flat config as default in @next/eslint-plugin-next: #83763
• fix: Rspack splitChunks.chunks regex: #83670
• Revert "Turbopack: Remove matchers.reload() call on each request": #83819
• fix: unstable_cache should perform blocking revalidation during ISR revalidation: #83820
• fix(Rspack): resolve HMR unresponsiveness or unexpected full reload & update dev snapshot: #83480
• Allow next.config.mts for Node.js native TS resolver: #83556
• chore: Ensure Import Trace starts in a newline: #83638
• Development: Remove matchers.reload() on each request: #83829
• Upgrade React from 8a8e9a7e-20250912 to 5e0c951b-20250916: #83850
• Bump typescript 5.9.2: #83833
• Allow headers, rewrites and redirects to be defined as sync functions: #83743
• Turbopack: Optimize addedRoutes and removedRoutes calculation: #83840
• [next-config-ts] Set Node.js native TS loader fallback flag to process.env: #83832
• Development: Clarify TypescriptStatus in watcher: #83857
• Upgrade sharp dependency to version ^0.34.4: #83892
• Upgrade React from 5e0c951b-20250916 to 128abcfa-20250917: #83906
• Add native ts resolver docs link to transpile-config: #83914
• OTel: use srcPage for templates when next.route is unavailable: #83911
• Remove inline CSS sourcemaps from next-devtools: #83917
• Development: Move all TypeScript related work in watcher together: #83912
• [Cache Components] Allow sync IO inside console methods : #83843
• Upgrade React from 128abcfa-20250917 to 84af9085-20250917: #83959
• Build: Add .next/trace-build with high level trace: #83949
• Remove force writing **/*.mts to tsconfig: #83967
• feat: Isolate dev build from prod: #83961
• Remove JS size reporting from next build: #83815
• Docs/workspace setup: #83490
• Turbopack: support import ... with {type: "bytes"}: #83896
• fix: error overlay not closing when backdrop clicked: #83981
• Upgrade React from 84af9085-20250917 to d415fd3e-20250919: #84003
• fix: worker logs should still support color: #84024
• Update font data: #84005
• Allow passing port to next internal trace: #83907
• Turbopack: error when importing Typescript in node_modules: #83990
• Turbopack: Deterministic builds (prerender-manifest, .next/package.json, ./next/postcss.js): #84081
• Turbopack: Fix babel-loader (allowing built-in or manual configuration): #82676
• [Cache Components] allow using headers() in runtime prefetches: #83838
• [Breaking] Remove deprecated publicRuntimeConfig and serverRuntimeConfig: #83944
• Turbopack: mode to disable tracing: #83683
• babel-loader: Fix a few issues with config caching: #83973
• Turbopack: Merge babel-loader and react-compiler configuration logic to avoid running babel twice: #83502
• [breaking]: enable router scroll optimization by default: #84102
• Fix layout for ssgPageRoutes in the file tree: #84104
• Turbopack: Remove useless 'default' built-in webpack loader condition: #84111
• Fix: Client should auto reload after server restarts: #83971
• trace-build: Add missing spans: #84080
• Development: Remove TypeScript from the hot path during bootup: #84090
• Guide users to experimental.cacheComponents config: #84121
• Development: Only load webpack when used: #84123
• Turbopack: Skip loading webpack plugin: #84125
• Development: Only load createEnvDefinitions when used: #83935
• BREAKING CHANGE!: bump default images.minimumCacheTTL from 1 min to 4 hours: #84105
• Feat: Add Model Context Protocol (MCP) server to Next.js dev server: #84100
• Upgrade React from d415fd3e-20250919 to 1eca9a27-20250922: #84093
• Turbopack: Remove the deprecated .turbo config object: #84109
• Flag excess properties in Next.js config with TypeScript: #84069
• docs: update Security section to direct disclosures : #84156
• ci: Enable experimental.isolatedDevBuild for test-experimental-dev: #84099
• [turbopack] Ensure React Compiler options are based dev vs prod: #84062
• Enable anonymous function naming in React Compiler: #84070
• Revert "[Breaking] Remove deprecated publicRuntimeConfig and serverRuntimeConfig (#83944)": #84167
• Fix double comma in build manifest: #84131
• [turbopack] set app dir only to true when no pages entries detected: #84144
• Split code-frame into separate compiled package: #84174
• refactor: separate forward browser logs utils: #84151
• Upgrade React from 1eca9a27-20250922 to e2332183-20250924: #84189
• [Cache Components] default to filtering unhandledRejection after abort: #84192
• fix: prevent URL mutation in router rewrites: #83963
• fix(server): fix pages router resume router matching: #84158
• Feat: get_errors MCP endpoint: #84161
• Add internal environment variable for enabling React Compiler: #84176
• [devtools] Disable React's default Transition indicator: #84202
• Upgrade React from e2332183-20250924 to b0c1dc01-20250925: #84248
• Feat: get_page_metadata MCP endpoint: #84211
• feat: capture logs into logging file during development: #84183
• babel-loader: Avoid calling expensive isReactCompilerRequired check when we must run Babel anyways: #84103
• [mcp] expose logging: #84226
• Move config.turbopack.moduleIds to config.experimental.turbopackModuleIds: #84230
• Show invalid default export errors during prerendering: #84242
• fix: make sure caller exists in babel preset: #84154
• [mcp] allow to enable mcp server through env var: #84278
• fix(metadata): make formatDetection respect true/false properly: #83924
• Upgrade React from b0c1dc01-20250925 to df38ac9a-20250926: #84276
• Add a --webpack flag and default --turbopack to true: #84216
• fix: Update URL resolution logic to handle search parameters on root path /?foo=bar: #78262
• [Breaking] Remove deprecated sync access to Dynamic APIs: #84179
• Move config.turbopack.moduleIds to config.experimental.turbopackModuleIds: #84230
• Show invalid default export errors during prerendering: #84242
• fix: make sure caller exists in babel preset: #84154
• [mcp] allow to enable mcp server through env var: #84278
• fix(metadata): make formatDetection respect true/false properly: #83924
• Upgrade React from b0c1dc01-20250925 to df38ac9a-20250926: #84276
• Add a --webpack flag and default --turbopack to true: #84216
• fix: Update URL resolution logic to handle search parameters on root path /?foo=bar: #78262
• [Breaking] Remove deprecated sync access to Dynamic APIs: #84179
• Turbopack: only write merged manifests when they have been changed: #84261
• Turbopack: add separate turbopackPersistentCachingForBuild/ForDev flags: #84215
• Revert "Add a --webpack flag and default --turbopack to true (#84216)": #84348
• Upgrade React from df38ac9a-20250926 to d15d7fd7-20250929: #84347
• Mark React Compiler integration as stable: #84220
• [cna] Add reactCompiler option: #82251
• Turbopack: remove canary version check for turbopackPersistentCachingForDev: #84277
• [turbopack] Add support for debug_ids: #84319
• Revert "Revert "Add a --webpack flag and default --turbopack to true (#84216)"": #84351
• [Breaking] Remove AMP codemod: #84356
• [Breaking] Remove deprecated built-in AMP: #84312
• auto-enable clientParamParsing and clientSegmentCache w/ cacheComponents: #84250
• [mcp] get server action tool: #84382
• Revert "Revert "Revert "Add a --webpack flag and default --turbopack to true (#84216)""": #84389
• Update otel test assertions and pages span_name: #84393
• [Breaking] Bump minimum TypeScript version to 5.1.0: #84384
• Upgrade React from d15d7fd7-20250929 to ef889445-20250930: #84383
• [Breaking] Remove deprecated unstable_rootParams: #84373
• [metadata] remove falsy dynamicParams approach: #84405
• fix: next rspack binding NextExternalsPlugin: #84303
• Development: Skip route matching when there is an existing match: #84227
• Revert "auto-enable clientParamParsing and clientSegmentCache w/ cacheComponents": #84419
• Upgrade React from ef889445-20250930 to 548235db-20251001: #84416
• [Breaking] Update default browserslist config: #84401
• Upgrade React from 548235db-20251001 to 1bd1f01f-20251001: #84417
• Allow metadataBase to be a string URL in addition to URL instance: #84297
• Upgrade React from 1bd1f01f-20251001 to 86181134-20251001: #84427
• [mcp] logging file should be reset for each session: #84425
• Revert "Revert "Revert "Revert "Add a --webpack flag and default --turbopack to true (#84216)"""": #84394
• Optimize isMetadataRoute function: #84409
• [ci]: split clientSegmentCache test runners off from experimental: #84440
• [Cache Components] Fix caching in generateMetadata/generateViewport: #84228
• Upgrade React from 86181134-20251001 to a757cb76-20251002: #84463
• [segment cache]: fix trailingSlash handling with output: export: #84465
• perf: Use a more aggressive retry loop for recursiveDelete: #84444
• [Cache Components] Dim logs after prerender aborts: #84153
• telemetry track mcp server usage: #84471
• simplify the way we check for turbopack config to ensure we support an empty turbopack object: #84494
• perf: Use synchronous IO when cleaning distDir in next dev and next build: #84472
• Make turbopack the default bundler for custom servers: #84281
• [segment cache]: fix interception route handling: #84497
• Upgrade React from a757cb76-20251002 to 85c427d8-20251003: #84496
• [segment cache]: collectSegmentData should respect experimental.staleTime config: #84520
• Fix potential race condition with request ID in dev mode: #84532
• [test] Enable reactDebugChannel for experimental test shards: #84533
• Simplify Metadata components: #84527
• Implement the updated prerender API shape: #84254
• Upgrade React from 85c427d8-20251003 to 4fdf7cf2-20251003: #84499
• Upgrade React from 4fdf7cf2-20251003 to c7862584-20251006: #84573
• fix(Turbopack): Add better error messaging for when we can't determine Next.js root: #83918
• Allow silencing unhandled rejection filter warnings and improve debugging: #84572
• [MCP] Fix: Do not dedup by URL for MCP get_page_metadata: #84564
• Guard createDebugChannel import by feature flag: #84604
• Build: Add time to logline of every step: #84602
• Upgrade React from c7862584-20251006 to a4eb2dfa-20251006: #84589
• [Cache Components] Schedule work on timeouts: #84344
• [dev] Define request ID for RSC requests on the client: #84605
• fix(cache-tags): add /index to implicit tags and adjust revalidatePath(): #84586
• Build: Highlight TypeScript and ESLint being run clearer: #84606
• [Breaking] Bump sass-loader to v16: #84387
• Update cases for build complete with adapters: #84361
• Turbopack: delete .next folder before throwing due to "pages/app directory must be in the same folder": #84553
• [mcp] change get-project-path to get-project-metadata: #84619
• feat(next/image)!: deprecate and warn on images.domains config: #84625
• feat(next/legacy/image)!: deprecate and warn on next/legacy/image usage: #84622
• Turbopack: improve errors/warnings for turbopack messages: #84552
• Turbopack: rename turbopackPersistentCachingForXXX to turbopackFileSystemCacheForXXX: #84632
• [Segment Cache] Add refresh URL to reused default segments: #84627
• [Segment Cache] Fix tests related to optimistic loading state reuse: #84498
• Upgrade React from a4eb2dfa-20251006 to 3025aa39-20251007: #84613
• [breaking]: enable clientSegmentCache by default: #84643
• feat: Acquire a lockfile on distDir in next dev and next build: #84428
• Add deprecation warning to Runtime config: #84168
• [middleware]: add upper bound to cloneBodyStream: #84539
• Remove automatic linting from build: #83136
• Re-enable legacyBehavior and passHref on Link: #84500
• [cna] Use stable React Compiler: #84660
• Add codemod for middleware to proxy: #84127
• Fix dynamic catchall parameter interpolation in parallel routes: #84279
• feat(breaking): Hard Deprecate PPR Configuration: #84280
• Deprecate middleware and recommend proxy: #84119
• Put native TS resolver for next config under --experimental-next-config-strip-types flag: #84675
• Fix interception route rewrites for nested dynamic routes: #84413
• fix: strip NEXTSEP from interpolated pathnames: #84430
• chore: Remove useless symlink resolution logic in recursive-delete.js: #84582
• breaking(next/image)!: remove 16px from default images.imageSizes config: #84647
• add Statsig Node Core package to Server External Packages: #84157
• Remove bailed out SSG routes from the list of SSG: #83861
• Revert "[Breaking] Skip Next.js internal routes /_next in middleware": #84697
• Bump eslint-plugin-react-hooks to v7: #84669
• Add refresh API to next/cache: #84666
• [Breaking] Require images.localPatterns for query in Image src: #84406
• [Breaking] feat(next/image)!: add support for images.dangerouslyAllowLocalIP and images.maximumRedirects: #84676
• Add new updateTag API and new signature for revalidateTag: #83822
• Add validation for missing default.js in parallel routes: #84702
• misc: allow beta to be triggered: #84713
• Fix tags check for expired/stale: #84717
• tweak middlewareClientMaxBodySize handling: #84712

Example Changes

• docs: Convert relative imports to @ aliases in examples: #83813
• chore: add example with oxlint: #83842
• fix: correct typo 'incomming' to 'incoming' in with-mqtt-js example: #83887
• chore: improve oxlint example: #83898
• docs: update Dockerfile to use node:lts-alpine instead of node:18-alpine: #84229
• Use Array.from to avoid @ts-ignore when copying i18n.locales: #82148
• examples: Remove AMP example: #84355

Misc Changes

• Turbopack: remove css_environment from Environment: #83487
• Turbopack: Don't add client_runtime_entries to Route Handler compilation: #83655
• Turbopack: Only load capsize-font-metrics once: #83654
• [CI] Fix GitHub Actions matrix configuration for React versions: #83677
• fix(Turbopack): Enable scope hoisting for large files or module counts: #83399
• [turbopack] Lazily construct resolved::Requests for EsmAssetReference: #83662
• Update content-security-policy.mdx, fix development environment error: #83665
• tests: disable flaky deployment test while investigating upstream: #83705
• [test] Update snapshots for Rspack + React 18: #83712
• Docs/sep paper cuts: #83689
• [Turbopack] Remove ssr-data module context: #83626
• CI: use KV for test timing data: #83745
• Emit build error when 'use cache' directive is misspelled: #83756
• docs(metadata): align default function export name with file name: #83796
• [turbopack] Remove the should_track_children parameter of the turbo tasks backend: #83258
• docs(data-security): add bun package manager example: #83735
• Update next-intlayer reference in i18n doc: #83761
• Update Rspack production test manifest: #83790
• Update Rspack development test manifest: #83791
• Turbopack: chunking debugging utilities: #83801
• Removed link to maintain text consistency: #83644
• Turbopack: rename some fields in fs: #83808
• Turbopack: validate CSS without computing all paths: #83810
• [test] Disable flaky navigation test: #83828
• docs: Type narrowing using LayoutProps, PageProps: #83692
• docs: implications of mutating cookies in server actions: #83691
• Only retry if canary fails on required jobs: #83851
• docs: Fix self-referential link to Middleware in middleware.mdx: #83854
• Update Rspack production test manifest: #83826
• Update generate-metadata.mdx: #81853
• Turbopack: remove lazy invalidated tasks: #83845
• Turbopack: remove Backend TaskState: #83846
• Turbopack: don't recompute empty parse results: #83883
• Turbopack: delete broken hmr benchmark: #83882
• Turbopack: only generate error string in error case: #83884
• docs: the as prop is still available in Pages Router: #83864
• Turbopack: map_module_batch: #83885
• Turbopack: Change run once signature to avoid exposing TaskId: #83844
• docs: Update command to use npx for tracing files: #83903
• Turbopack: ModuleGraphRef: #83890
• Update Rspack development test manifest: #83876
• Turbopack: make graph traversal sync: #83891
• chore: Fix test snapshot: #83901
• Update Rspack production test manifest: #83877
• docs: add next.config.ts Node.js native resolver: #83561
• Turbopack: add turbo_tasks::run to run in turbo tasks scope without a task: #83847
• Turbopack: fix double codegen of some merged modules: #83886
• Turbopack: add traces to merged module computation: #83908
• Turbopack: RuleCondition support resourceQuery contains: #83468
• fix: add the missing comma in the document example: #83932
• Turbopack: Document the reasons for the current design of parse_segment_config_from_source: #83919
• Turbopack: extract parse_source_map_comment: #83938
• Turbopack: enable nodelay for node.js pool socket: #83942
• feat: next-rspack-binding: #82811
• Only send notification if canary fails on required jobs: #83953
• Turbopack: allow to read State from turbo_tasks::run: #83955
• Fix conclusion check for retry_test workflow: #83960
• Add Descope to Auth libraries list: #83968
• [turbopack] Track task durations in the task_statistics file: #83522
• [turbopack] Remove the issue_path feature and related functionality: #83920
• Turbopack: use turbo_tasks::run in next.js to avoid task memory leak: #83848
• Update Rspack production test manifest: #83934
• Update Rspack development test manifest: #83933
• Turbopack: add test case that checks memory leak: #83849
• Turbopack: read project strongly consistent in project_update: #83974
• Fix output comparison when checking conclusion of required jobs: #83986
• Turbopack: JsAnalyzer parse AssignExpr: #83962
• Turbopack: less eager manifest generation: #83736
• Turbopack: use depth as priority for merged module info: #83909
• Turbopack: "connect" tasks in turbo_tasks::run too: #83975
• Update Rspack production test manifest: #83979
• Update Rspack development test manifest: #83980
• Turbopack: Make transient tasks root tasks too when called in turbo_tasks::run: #83976
• Turbopack: trace state changes: #83977
• [turbopack] cleanup analyzer: #83983
• [Turbopack] Fix AST traversal for this in function default parameters: #83746
• [turbopack] Consolodate logic for visiting functions to simplify state management: #82763
• [turbopack] Track the scope in which variables are assigned: #82845
• [turbopack] Set liveness of exports based on assignment analysis: #82802
• Turbopack: trace all state changes: #84053
• docs: We have dropped the CORS example linked: #84065
• docs: add pageExtensions note to Middleware and clarify default filename: #84045
• Fix TypeScript type error in example code: #84041
• Turbopack: fix test case and update project_update to turbo_tasks::run too: #83978
• Turbopack: run tests with multiple threads: #84074
• Turbopack: flush Node.js worker IPC on error: #84077
• Turbopack: parallelize scope hoisting computation: #83904
• Add test for JS resource size on navigation: #83731
• Update Rspack development test manifest: #84061
• Update Rspack production test manifest: #84060
• Turbopack: Document automatic Babel config support: #84002
• docs: Fix the title/path of the turbopack page on pages router: #84001
• Turbopack: remove references from ChunkData: #84076
• Turbopack: include availability hash in the ident of evaluated chunks groups: #84082
• [turbopack] s/analyse/analyze/g: #84112
• [Turbopack] avoid attaching referenced output assets to chunks: #75933
• fix(docs): Fix links in UPGRADING.md: #84114
• docs: improve dynamic routes example in project structure page: #84086
• docs: onRequestError request header type: #83988
• Turbopack: Improve persistent caching test case: #83205
• Turbopack: add more details to the graph panic: #84126
• docs: Cookies store access is async: #83987
• Bump Rust to nightly-2025-09-21: #83415
• Upgrade CodSpeed action and add analyzer benchmarks: #84135
• Turbopack: fix run_once when returning error: #84142
• [turbopack] Conditionally collect affecting sources: #83921
• Turbopack: slightly improve resolve_source_map_sources: #84147
• Turbopack: RawEcmascriptModule: #81806
• Turbopack: add more details to the graph panic: #84143
• test: split app-middleware test per describe: #84130
• Update Rspack development test manifest: #84117
• script: improve release log generation: #83686
• Turbopack: split task_execution_completed into multiple methods: #84170
• Turbopack: only generate field if spans are enabled: #84184
• Turbopack: support more dynamic request with import map: #84178
• [turbopack] defer a value_to_string operation until we need it: #84188
• Update Rspack production test manifest: #84165
• Revert "[turbopack] Set liveness of exports based on assignment ana…: #84207
• Turbopack: increase retry duration, reduce busy looping when there is other work: #84171
• Turbopack: Try to avoid block_in_place in scope: #84172
• [turbopack] Remove some bitmap clones: #84193
• Turbopack: lazier manifests, part deux: #84191
• Turbopack: avoid panic on updating output when a task was cancelled: #84214
• docs: nav_title for long unbroken words: #84233
• Turbopack: Use RawValue for mappings inside SourceMapJson: #84208
• Update Rspack development test manifest: #84218
• Turbopack: fix NFT of readFileSync of relative path: #84155
• Turbopack: improve references benchmark: #84223
• Update Rspack production test manifest: #84217
• Turbopack: drop ASTs when only tracing: #84185
• docs: Include more detailed instructions on excluding from common AV solutions, including macOS Gatekeeper: #84206
• Turbopack: trace fs-extra calls: #84246
• [test] Overhaul Undefined default export test suite: #84235
• Turbopack: Scope with work queue: #84225
• [test] Make Undefined default export an e2e test suite: #84240
• [turbopack] Conditionally create pages router data endpoints.: #84194
• Turbopack: parallel connect children: #84173
• Turbopack: count turbo_tasks::run as foreground tasks to avoid being idle: #84245
• Turbopack: make persistent caching log line more clear: #84262
• Turbopack: make tracing nicer: #84263
• docs:Small improvement on the contribution guide for clarity: #84200
• Turbopack: Remove not-very-useful "Finished writing to disk in" log line: #84244
• Turbopack: follow up changes from parallel children: #84219
• [turbopack] Simplify take_issues and peek issues: #84199
• Update Rspack development test manifest: #84260
• Update Rspack production test manifest: #84259
• Turbopack: Scope with work queue: #84225
• [test] Make Undefined default export an e2e test suite: #84240
• [turbopack] Conditionally create pages router data endpoints.: #84194
• Turbopack: parallel connect children: #84173
• Turbopack: count turbo_tasks::run as foreground tasks to avoid being idle: #84245
• Turbopack: make persistent caching log line more clear: #84262
• Turbopack: make tracing nicer: #84263
• docs:Small improvement on the contribution guide for clarity: #84200
• Turbopack: Remove not-very-useful "Finished writing to disk in" log line: #84244
• Turbopack: follow up changes from parallel children: #84219
• [turbopack] Simplify take_issues and peek issues: #84199
• Update Rspack development test manifest: #84260
• Update Rspack production test manifest: #84259
• [test] Ignore pnpm update notifier: #84328
• [test] Stop downloading unused test browsers when generating PR stats: #84329
• docs: remove repeated to: #84325
• Turbopack: Use more robust logic for absolute and percent-encoded URLs in source maps received from loaders: #84255
• Turbopack: only replace edge dynamic calls in dev: #84354
• [turbopack] Remove a bunch of dead code from the source map implementation: #84318
• Turbopack: prevent duplicate NFT modules: #84369
• docs: Remove AMP docs: #84357
• docs: Type helpers don't need to be imported: #84265
• Turbopack: Add docs for debugIds option: #84375
• Remove references to size metrics in next build from our docs: #83823
• Bump to swc v42: #83477
• Turbopack: skip invalidating a task on cell/output change when the dependency is outdated: #84376
• Turbopack: trace module.createRequire: #84335
• Update failing e2e deploy tests: #84395
• Turbopack: Webpack loader this.fs.readFile: #83313
• Improve tests: #84374
• Revamp Next.js boilerplate: #81945
• Add test for twoslash: #84267
• Docs/project structure polish: #84386
• Bump to swc v44: #84420
• Turbopack: don't fail for parse errors in tracing: #84408
• Update Rspack development test manifest: #84365
• Update Rspack production test manifest: #84366
• [ci]: remove PPR-specific CI jobs: #84439
• docs: Verbose troubleshooting for unconfigured hosts: #84271
• Update Rspack production test manifest: #84398
• Add gt-next to i18n list: #84396
• [ci]: fix build-output-prerender to support segment cache env: #84467
• [ci]: fix app-static snapshots with clientSegmentCache: #84468
• Turbopack: Only benchmark file IO on next dev: #84474
• Turbopack: improve incremental build performance when deployment id changes: #84460
• fix: Missing link in Lazy Loading docs: #84473
• docs: simplify streaming metadata: #84253
• make withRspack idempotent: #84482
• Turbopack: Use strongly consistent reads in random_change unit test: #84505
• Update Rspack development test manifest: #84480
• Update Rspack production test manifest: #84481
• [ci]: remove test from segment cache manifest: #84507
• [ci]: de-flake client cache test: #84517
• Revert "Turbopack: skip invalidating a task on cell/output change when the dependency is outdated": #84526
• next mcp router
• Revert "next mcp router"
• test: Use nextTestSetup in scss tests: #84501
• [turbopack[ Use the configured hasher to implementh Hash for AutoMap and AutoSet: #84542
• Turbopack: debug ids for server chunks: #84557
• CI: Enable experimental.isolatedDevBuild for test-unit: #84559
• [test]: convert prefetching tests to be segmentCache compatible: #84521
• CI: Enable experimental.isolatedDevBuild for test-prod: #84556
• Add .next/dev/types to CNA templates tsconfig include: #84566
• CI: Enable experimental.isolatedDevBuild for test-integration: #84558
• Update Rspack development test manifest: #84548
• Add a webpack flag to create next app. Ensure that if you set it or decline turbopack we set the --webpack flag on the generated project: #84476
• Update Rspack production test manifest: #84549
• CI: Enable experimental.isolatedDevBuild for test-dev: #84562
• [test] Unflake static image test: #84535
• Turbopack: Lower the IO concurrency limit in CI tests: #84508
• Add documentation for experimental adapters handling: #83737
• Turbopack: improve next/dynamic eventual consistentcy: #84560
• fix hidden errors in router-act: #84603
• fix(cna): use correct postcss plugins syntax: #79949
• Turbopack: absolute requests in webpack loader: #84575
• Update Rspack development test manifest: #84592
• Update Rspack production test manifest: #84593
• Turbopack: Remove workaround in hyper for rustc miscompilation bug on macos intel: #84578
• Turbopack: add manual worker count override: #84454
• Turbopack: don't ignore TS parse errors: #84597
• Add middleware to routes order doc: #84618
• [create-next-app]: prompt to use recommended options: #84570
• Update labeler: #84623
• Turbopack: use mmap advise to help the OS preloading: #84379
• Turbopack: skip invalidating a task on cell/output change when the dependency is outdated: #84551
• Turbopack: follow-up changes from untracked tracing: #84629
• Turbopack: sourcemaps for JSON modules: #84611
• Turbopack: avoid race condition when updating cells: #84598
• docs: update core documentation for Turbopack as default bundler: #84282
• Update Rspack development test manifest: #84631
• [turbopack] Only send the filesystem caching timing messages for slow events: #84646
• docs: experimental.isolatedDevBuild: #84656
• docs: add note clarifying project root in monorepo: #84628
• Fix flakey overlay feedback test: #84662
• [ci]: update flake detection to only run in Turbopack: #84659
• [ci]: move router-act to top level testing utils: #84653
• [tests]: de-flake client-cache.parallel-routes.test.ts: #84655
• [create-next-app]: add eslint to default template: #84661
• Update Rspack production test manifest: #84630
• [test] Assert on stable error codes: #84671
• Turbopack: convert HashMap to IndexMap for deterministic tasks: #84641
• Add note about $ACTION_ properties, remove reference to .entries(): #84459
• Fix typo on welcome page: #84715

Credits

Huge thanks to @@mischnic, @@timneutkens, @@unstubbable, @@wyattjoh, @@Cy-Tek, @@lukesandberg, @@OoMNoO, @@ztanner, @@icyJoseph, @@huozhi, @@gnoff, @@ijjk, @@povilasv, @@dwrth, @@obendev, @@aymericzip, @@devjiwonchoi, @@SyMind, @@vercel-release-bot, @@Shireee, @@eps1lon, @@dharun36, @@kachkaev, @@bgw, @@yousefdawood7, @@TheAlexLichter, @@sokra, @@ericx0099, @@leerob, @@Copilot, @@fireairforce, @@fufuShih, @@anvibanga, @@hayes, @@Milancen123, @@martinfrancois, @@lubieowoce, @@gaojude, @@lachlanjc, @@liketiger, @@styfle, @@aaronbrown-vercel, @@Samii2383, @@FelipeChicaiza, @@kevva, @@m1abdullahh, @@F7b5, @@Anshuman71, @@RobertFent, @@poteto, @@chloe-yan, @@sireesha-siri, @@brian-lou, @@joao4xz, @@stefanprobst, @@samselikoff, @@acdlite, @@gwkline, @@bgub, @@brock-statsig, @@karlhorky, and @@feedthejim for helping!