Steam :: Steam Deck :: SteamOS 3.5.5 Update
Steam :: Steam Deck :: SteamOS 3.5.5 Update

steamcommunity.com
Steam :: Steam Deck :: SteamOS 3.5.5 Update

tl;dr Steam OS 3.5 released to stable branch, adding sRGB emulation, and HDR and VRR (for external devices)