With the release of Windows 10 April 2018 Update, Steam last night announced that Windows Mixed Reality for SteamVR is coming out of “early access”. Over the past five months, based on the feedback from users, Steam has made several improvements by releasing over 10 updates and Microsoft has released new fixes and features in the Windows 10 April 2018 update to improve the Steam access. These updates have significantly improved performance and stability, added haptic feedback for motion controllers, and improved how motion controllers appear in SteamVR.
Over 422 games in the Steam Store now officially declare support for Windows Mixed Reality.
Steam also mentioned that they are aware of community’s requests for more customizable input and the ability to launch from the Cliff House. They are working on solutions and will share more details soon.