Was looking through this looking for any new information. The number of dev kits they are sending out is encouraging. They seem to think it will encourage developers to get games Steam Deck ready. That will also mean Linux ready, so we will see.
It is worth mentioning that Sony was interested in the game God of War to run well on Linux through Proton and therefore handed over Valve an early build of the game for testing and optimization reasons. This comes directly from Valve employer:
God of War looks solid on Proton at launch! Special thanks go to Sony for providing early access so the development team was able to get it ready ahead of the big day. Today’s Experimental release contains a performance optimization for it.
- Source: Pierre-Loup Griffais