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 would argue that, as long as valve gets it out the door, they support it. Index owners are still supported and that's from a headset released in 2019. The oculus rift CV1 released in 2016 and it was killed around 2020 when oculus was purchased by Meta. Four years, and the headset is basically a paperweight for anyone who still owns one. A $600 USD paperweight.
Considering that the connection cable was the first thing to die and in 2020 meta stopped selling those cables, anyone I know who had one, including myself, either stopped using it, or was forced to stop when their cable inevitably broke.
There's a dozen examples. The og steam controller, the steam link, and more recently the steam deck, which is still going strong.
Yes, they have issues getting ideas out the door, but when they get out the door, they're supported for a good long while.
These don't look like "we have an idea to build a thing" that will never make it to market... This looks like "we finally got a delivery date for these finished units and we're excited about it"
I'm looking forward to it, no matter what. Valve has time and time again proven itself to be more consumer focused than other tech companies. More from them is good IMO.