The Steam Deck is about to get official 1200p screen support

Valve is working on implementing support for a 1200p screen on the Steam Deck in SteamOS, making it easier for users to enjoy sharper resolution without having to install third-party patches. While the upgraded screen offers improved color accuracy and glare reduction, the current hardware limitations of the Steam Deck may struggle to achieve decent [...]

from FunFect Games https://funfect.games/the-steam-deck-is-about-to-get-official-1200p-screen-support/