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
Arch linux ARM (the base of such steam os) has existed for a while now. Not to diminish Valve efforts, just putting in some context.
I’m running it on my raspi but it seems like the repos have been frozen for a while now?