Valve just dropped SteamOS 3.8.0 on the Preview channel, and yeah—it looks like a normal update at first, but the real story isn’t a couple of performance tweaks. The biggest change is that Valve added initial support for upcoming Steam Machine hardware, and that completely shifts the conversation. Up until now, SteamOS has basically been built around the Steam Deck, but this update feels like Valve is preparing SteamOS for something bigger—potentially a proper desktop install path and a more console-style PC experience. I also go through the fixes that matter day-to-day: per-app performance profiles finally applying consistently (TDP, GPU clocks, FPS caps), the performance overlay correctly reporting FSR, and stability improvements like fixing those nasty crashes/black screens when closing certain games. Desktop Mode switching to Wayland by default is a big technical move too, because it should reduce the performance gap between Desktop Mode and Game Mode and make Desktop feel smoother overall. On top of that, Bluetooth wake is back again for the LCD model, there are audio improvements (including Bluetooth headset mics), and SteamOS keeps expanding support for non-Deck handhelds with better controller behavior and reduced input latency. It’s still early and still Preview, so I wouldn’t recommend installing it unless you’re specifically testing—but it’s absolutely one to watch.