Phoronix article: https://www.phoronix.com/news/Steam-Machines-Frame-2026
Also listed here: https://store.steampowered.com/sale/hardware
Valve has already sent support for the new Steam Controller upstream: https://www.phoronix.com/news/New-Steam-Controller-SDL
GOG has no DRM, but they also don’t offer the same kind of services, like workshop, updates, cloud sync, etc.
Not trying to say they’re worse or anything, I love GOG, but it’s really kind of comparing apples to oranges here.