Valve has released an updated Windows APU driver for Steam Deck which includes various compatibility, security, stability, and performance improvements for Windows on Steam Deck. The latest APU and other necessary drivers can be downloaded from the official Steam website.
Notably, Steam Deck supports both Windows 10 and Windows 11. However, to get a seamless Windows experience on the Deck, you need a few additional drivers to have the best experience. These updated drivers can be downloaded from the Steam site.