Overview
- SteamOS 3.8.0 hits the Preview channel as the first build with initial Steam Machine support, and patch notes warn a channel-selection bug may boot devices into the Beta branch.
- For the original LCD Steam Deck, Valve adds preliminary hibernation and a Memory Power Down option to curb idle battery drain, re-enables Bluetooth Wake, and enables Bluetooth headset microphones in gaming mode.
- The update broadens official support for non‑Valve handhelds, naming the Xbox Ally series, Lenovo Legion Go 2, and OneXPlayer X1, plus improvements for devices from MSI, GPD, Anbernic, OrangePi, and Zotac.
- Non‑Deck tweaks include long‑press power actions across many devices, processor power‑mode controls on Xbox Ally, charge‑limit settings for Legion Go models in desktop mode, and improved video‑memory management for discrete‑GPU platforms.
- Desktop and system changes switch SteamOS to Wayland by default and upgrade KDE Plasma to 6.4.3, adding desktop HDR, VRR, per‑display scaling, improved Proton windowing, an updated graphics driver, and HDMI audio channel detection.