The Steam Deck Beta channel has had a few updates today:
The Game info dialog has been reverted back to the old Game Info Dialog
Reduced startup time for users with tens of thousands of games in their library
A crash has been fixed crash when opening the Steam store
Fixed a crash on startup when an internal Steam browser window fails creation
Fixed Steam library becoming unusable after applying a controller configuration
Fixed an issue where a Team Fortress 2 Steam Controller startup sound was missing
Fixed some issues with Nintendo switch gyro drift calibration
The full release notes can be seen here