SteamOS 3.4.11 has been released to the Stable channel for Deck with the following changes:
Firmware 116
- Improved robustness of the Firmware Settings Reset chord (Volume Down + Quick-Access + Power) against some boot hang scenarios.
- Fixed a rare issue that would set the processor TDP limit too low causing CPU and GPU frequencies to be stuck at 400 MHz and 200 MHz respectively.
- Fixed an issue when the charging light would turn back on when plugged in for a while after fully charged.
SteamOS
- Fixed an issue where power button presses could switch games to keyboard/mouse mode.
We're going to see 3.4.99b before we get to 3.5
Be thankful Valve was able to release a version 3.x of anything!