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
They need their products to be as clean as possible to hook people into microtransactions and their proprietary platform. Valve is a for profit company and the ceo owns a fleet of mega yachts