Valve will loose competition quick if they wait that long. Asus is probably already working on a rog ally 2, legion go came out and is packed with features. Aleast release a steam deck with the newest GPU, ram and a 1080P 120hz or 144hz oled or QHD 500 nit screen within a year or so from now.
I don’t think ASUS is making another ally the thing was kinda a failure