http://www.pcgamer.com/steam-vr-support-for-windows-mixed-reality-is-right-around-the-corner/

Microsoft got our hopes up when it said that Steam support was headed to its mixed reality platform, only to later clarify that it would not be ready for launch. That's a bummer, but on the bright side, it might not be a long wait—Microsoft announced at a cozy press event in San Francisco that its mixed reality platform is now open to Steam VR developers. This will be followed by a preview program open to consumers this holiday season.

The announcement is a bit of a big deal, at least potentially. For one, this is the first time we have been given any kind of a timeline for Steam support, rather than assuming Microsoft is nowhere close. And secondly, with Steam being the most popular destination for buying PC games, this could be the shot in the arm mixed reality needs. It certain gives Microsoft some street cred.