Valve hat es offiziell bestätigt! In den Linux-Steam-Client wird "Steam Play" integriert, welches eine angepasste Version von Wine namens Proton ist. Darin integriert sind die DXVK-Entwicklungen (siehe diesen Thread: -> Wine mit DXVK - DirectX to Vulkan ) und noch mehr ...
Here's what they say it improves:
Windows games with no Linux version currently available can now be installed and run directly from the Linux Steam client, complete with native Steamworks and OpenVR support.
DirectX 11 and 12 implementations are now based on Vulkan, resulting in improved game compatibility and reduced performance impact.
Fullscreen support has been improved: fullscreen games will be seamlessly stretched to the desired display without interfering with the native monitor resolution or requiring the use of a virtual desktop.
Improved game controller support: games will automatically recognize all controllers supported by Steam. Expect more out-of-the-box controller compatibility than even the original version of the game.
Performance for multi-threaded games has been greatly improved compared to vanilla Wine.
It currently has a limited set of games that are supported, but even so it's quite an impressive list that they're putting out there. Which includes DOOM, FINAL FANTASY VI, Into The Breach, NieR: Automata, S.T.A.L.K.E.R.: Shadow of Chernobyl, Star Wars: Battlefront 2 and more. They will enable many more titles as progress on it all continues.