This is mainly a bug fix release, including also a minor security update. Other highlights:
We reverted docker from v23.0.6, introduced during Unraid OS 6.12 development, to v20.10.24, which is the latest patch release of docker used in Unraid OS 6.11. This to address increased memory usage and other issues discovered with docker.
A small necessary change to invoke our 'update_services' script whenever a WireGuard tunnel starts or stops is automatically applied to all 'config/wireguard/*.conf' files when you update via Update OS page. For manual update or if you downgrade, it is necessary to make a "dummy change" in a setting on the Settings/VPN Manager page and then click Apply.
Bug fixes and improvements
email notifications: add line in /etc/php.ini: 'mail.mixed_lf_and_crlf=On' to workaround change in PHP8 CRLF handling
emhttpd: Fix regression: emulated ZFS volumes not recognized
emhttpd: Fix regression: format fails if diskFsType==auto and defaultFsType specifies encryption
emhtptd: Fix regression: mount fails if diskFsType==auto
I'm also going to wait a bit before updating (for the first time in a very long time) mostly because of the docker downgrade. Don't have a whole lot of time to tinker with stuff right now in case something breaks. 6.12.1 is also running smooth on my machine so I'm not really in a rush.