#Mastodon v2.4.3rc3 is out: https://github.com/tootsuite/mastodon/releases/tag/v2.4.3rc3
Likely the last pre-release as it's pretty stable. Expect 2.4.3 to come out soon.
github.comtootsuite/mastodonmastodon - Your self-hosted, globally interconnected microblogging community