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
I’ve got a Meta Quest 2 as a hand-me-down and yes, it’s extremely locked down. It’s possible to use a third-party app store, but to make it work you have to get a developer account with Meta and enable wireless debugging.