Valve’s SteamVR 2.18.1 beta revised proprietary driver interfaces and Steam Link OSC output without noting either change — breaking at least one paid add-on while the USB Quest tether headlines the same build.
SteamVR beta 2.18.1 adds official tethered Quest USB support for Steam Link (dual betas required), makes Aurora the default environment, and ships Linux AMD and systemd fixes. Stable stays on 2.17.
Valve’s SteamVR Hotfix 2.17.10 restores Motion Smoothing Force Always-On, closes two Linux AMD crash paths, defaults Steam Link CAS to off, and renames OpenXR bumper to shoulder.
Valve’s Steam Link public beta for Meta Quest adds wired USB PC streaming via Horizon OS NCM, following Virtual Desktop—with a caveat that Wi-Fi discovery may still be required.