The thing that makes me the most excited about this slate of new Valve hardware isn't something they explicitly announced but seems to be heavily alluded to: the Steam Machine can stream Steam games to the Steam Frame, and the Steam Frame itself is ARM-based but runs SteamOS, which itself is based on Arch Linux with a KDE desktop environment. Hopefully, this all means that SteamVR is finally, finally coming to Linux.
Given Valve's heavy focus on Linux as of late, I was kind of surprised that SteamVR didn't work on Linux without a lot of finagling. As an active VRChat player, one of the only reasons I haven't made the jump from Windows 11 to Linux on my main desktop is simply because of how difficult VR was to get working on Linux.