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


Steve from Gamers Nexus has a solid video where he met with people about Valve and goes into a lot of details on the announced hardware. He reported that they told him that the Steam Machine is not aiming for a console price. This made sense to him as he pointed out it’s basically an ITX computer and you can do computer things with it. Anyway I don’t know what it will cost but I’m guessing north of $500 easily.