Steam Deck - Steam Deck OS 3.5 Preview - Steam News
Highlights:
- HDR and VRR on external displays
- Colour calibration, with the option to emulate sRGB or even wider gamut (I was already doing this manually with a colourmeter and vkBasalt but good to see this more widely available)
- Improved latency when game renders below the refresh rate
- Fix on some games/emulators that would have perf issues with SMT enabled
- Native undervolting