This is the one with quite a few new cool features! Also fixes issues with the changes Discord deployed today. Fun!
This release contains a security fix.
You can see the full advisory here: GHSA-mp9m-g7qj-6vqr
Full changelog: https://docs.discord.red/en/latest/changelog_3_4_0.html#redbot-3-4-1-2020-10-27