oh, we are at 4 snapshots yet? cool ig.
This update addresses following issues on both new/updated installations:
gamescope (power controls): Introduce daemon that checks for SteamOS Reboot/Shutdown sentinels, instead of doing dirty hacks on gamescope-session side
pacman: Switch to jupiter-main bleeding edge branch for both new and updated installations, thus updating HoloISO to SteamOS 3.2, ignoring upgrades for MESA/Gamescope/GRUB
Recovery mode: huge rework for recovery mode including recoveryinit and few new things

Now, while being in recovery mode, you are able to turn off/on session switching and autologin just by invoking holoiso-disable-sessions or holoiso-enable-sessions
jupiter-controller-service: Dummy-ify to cancel failed systemd messages
steamos-update: Fix idiotic upgrade overrides

This update adds following stuff on new installations:
GPU choice - This adds option to choose fresh or downgraded gamescope for incompatible systems:

This update was mostly about fixing those irritating stuffs, so here's old changelog to see what's changed since Summertime snapshots:

This update addresses following issues on updated installations:

• gamescope: Reboot/Shutdown/Sleep (including deep sleep throbber) is now fixed
• steamos-session-select: More seamless session switching and resembles temporary session switch behavior like on Deck
• Fixed issue, where Vapor theme would get white on occassion

If you are on Summertime release:

• Execute sudo pacman -Rdd sddm && sudo pacman -S sddm-wayland
• Then update by invoking steamos-update and reboot.

New additions for fresh installation:

• This installation is now based over SteamOS 3.2 jupiter-main branch. This means, that this release adopts "Steam Deck beta" channel packages for more bleeding-edge and fresh things!
• /home and root are now located in separate partitions! This is done to minimize impact on personal data in case of system corruption and stuff, /home is formatted as ext4
  
• GRUB now has it's own default configuration, running grub-mkconfig will no longer report system as Arch Linux
• Flatpak and flathub are enabled and installed by default
• Additional options for SteamOS now has "Recovery mode" entry! If you encounter any issues, you can boot into it and do your required stuff, for example downgrade Gamescope/MESA on Intel installations or switch sessions beforehand.
  
• Fixed wrong GPU usage information, thanks to Valve for updating Gamescope/Mangohud
• Desktop now has proper permissions for R/W, thanks to @fewtarius
• holoinstall will check for NTP to be on before installing, to avoid SSL mismatch, thanks to @pants4hire
• gamescope: Reboot/Shutdown/Sleep (including deep sleep throbber) is now fixed
• steamos-session-select: More seamless session switching and resembles temporary session switch behavior like on Deck
• Fixed issue, where Vapor theme would get white on occassion