• Use an array for the versions table ([numKeys]roachpb.Version) for cleaner definitions (and fast lookup)
• Deprecate ByKey() in favor of a Key.Version() method (to avoid the annoying clusterversion.ByKey(clusterversion.VFoo)
• Separate the DevOffset code to a different file, improve documentation
• Rename BinaryVersion to Latest, MinBinarySupportedVersion to MinSupported
• In VersionHandle rename binaryVersion to maxVersion and binaryMinSupportedVersion to minVersion
• Remove TestingBinaryVersion etc
• Rework scheme for intermediary versions: clusterversion: rework scheme for intermediary versions #112708 [too disruptive]
• Make tests around upgrade that check an expected version only look at the release series part (so they don't need fixing when we mint a final version)
• Adjust cockroach cli initialization use the previous release instead of MinSupported unless skipping is enabled via env var; update upgrade roachtests
• Add a special nightly build that runs unit tests with MinSupported bumped up (using a build tag) [not worth triaging test failures from flaky tests]
• Make a command that can dump new "initial values" files (for pkg/sql/catalog/bootstrap/data/)
• Avoid unmarshaling in the IsActive hot path (clusterversion: proto Unmarshal on each version check #113385)

And, after a good chunk of these are done:

• Update/rewrite the release runbooks as an md file in the repo.

Jira issue: CRDB-32524