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


On the opposite of the spectrum, my small hands doesn’t play well with that feature. The capacitive sensors only works if your fingers touch the top of the sticks but I usually move the sticks by pushing on the round edges of it so I still occasionally brush against the touch pads which is annoying.
You should be able to disable them on a game by game basis if needed. Annoying thiugh