See the UPGRADE.md for all important technical changes.
- #14353 - fix: Remove usage of deprecated PDO constants (backport: 6.6.x) (#14353)
- #14451 - Fix IAP decoding with old OpenSSL versions
- #14413 - fix: keep mail attachments across flow actions (backport: 6.6.x) (#14443)
- #14058 - fix: Never load unfiltered many-to-many (backport: 6.6.x) (#14438)
- #14475 - fix: attribute entities missing with auto configuration (backport: 6.6.x) (#14475)
- #14482 - feat: Update PHPStan and its Symfony plugin (#14482)
- #13968 - Symfony 7.4 Update
- #14289 - fix: allow bulk edit stock with negative value (backport: 6.6.x) (#14392)
- #14485 - fix: ProductListingLoader shows random product variant instead of the main variant - backport 6.6.x (#14485)
- #11733 - fix: Error when inserting tables in custom field (backport: 6.6.x) (#14537)
- #14633 - fix: document footer placement (backport: 6.6.x) (#14633)