Recently, we rebased against the trunk branch, ensuring that the accord branch is now in sync with the latest trunk version. This presents an opportune moment for those interested to review the code.
We have a pending pull request (https://github.com/apache/cassandra/pull/3552) that we do not intend to merge. Our current focus is on addressing several bug fixes and ensuring the safety of topology changes (as evidenced by the number of issues filed against the trunk). Once we wrap up bug fixes and safety features, we will likely discuss the merge to trunk, so now is a great time to start engaging. Thank you everyone for your patience!