Big Picture, the mode that converts Steam’s user interface into a more console-like design better suited to TVs and controllers than monitors and mice, may not be long for this world. According to austinp_valve, a Valve employee posting
on the Steam community forums, the plan is for the new UI from the just-announced Steam Deck handheld PC
to replace Big Picture mode on the desktop version of Steam as well.
SteamOS 3.0 on Valve’s Steam Deck.