v2.1.0

This release is comprised of 285 commits and these notes reflect only the highlights in the changelist.

View the full changelist here: v2.0.6...v2.1.0

Known Issues

Erroneous warning message in validator client when bellatrix fee recipient is unset. This is a cosmetic message and does not affect run time behavior in Phase0/Altair. Fixed by #10543
In Bellatrix/Kiln: Fee recipient flags may not work as expected. See #10555 for a fix and more details.

Web3Signer support. See the documentation for more details.
Bellatrix support. See kiln testnet instructions
Weak subjectivity sync / checkpoint sync. This is an experimental feature and may have unintended side effects for certain operators serving historical data. See the documentation for more details.
A faster build of blst for beacon chain on linux amd64. Use the environment variable USE_PRYSM_MODERN=true with prysm.sh, use the "modern" binary, or bazel build with --define=blst_modern=true. #10229
Vectorized sha256. This may have performance improvements with use of the new flag --enable-vectorized-htr. #10166
A new forkchoice structure that uses a doubly linked tree implementation. Try this feature with the flag --enable-forkchoice-doubly-linked-tree #10299
Fork choice proposer boost is implemented and enabled by default. See PR #10083 description for more details.

Flag Default Change The default value for --http-web3provider is now localhost:8545. Previously was empty string. #10498
Updated spectest compliance to v1.1.10. #10298
Updated to bazel 5.0.0 #10352
Gossip peer scorer is now part of the --dev flag. #10207

Removed released feature for next slot cache. --disable-next-slot-state-cache flag has been deprecated and removed. #10110

Too many bug fixes and improvements to mention all of them. See the full changelist

Go version updated to security release 1.17.9. The security fixes do not apply to Prysm.
Go-ethereum components updated to 1.10.17-535f25 #10417