Contains bug fixes and security fixes.
Since this place is brand new and lacks info about 6.12 to begin with, here's the highlights for version 6.12 as well:
Unraid 6.12
- First stage of ZFS support
Users are now able to create ZFS file systems in user-defined pools. Full ZFS support will however be split between this and the next major release.
- Share Storage Conceptual Change
This one is a bit murky and diffucult to summarize, but it concerns how storage works with shares. I recommend reading the full update post on the Unraid site if you're interested.
- Redesigned webGUI Dashboard
It is now possible to move elements up and down, as well as between columns in the dashboard.
There's a new section under "Settings->Network Settings->Interface Extra" with some interface settings. Seems to be required for Tailscale and Zerotier going forward.