Blizzard broke Diablo IV on Linux / SteamOS machines with the Season 14 update, but Valve have now fixed it themselves in Proton Hotfix.
Campaign Evolved ahead of the July 28th release, marking it Steam Deck Verified / SteamOS Compatible. The rating is now listed on the Steam stor ...
While Valve will not be making and providing their own e-ink display for the Steam Machine, they have opened it up so anyone can now do it.
Linux / SteamOS gaming continues to level up with a Proton Experimental update to get more Windows games working well on Steam Deck, Steam Machine and others.