Microsoft has been promoting its partnership with multiple headset manufacturers to produce a series of Windows 10-ready "mixed reality" headsets. The distinction between virtual reality and mixed reality is so far dubious, but it indicates an integration of augmented reality (AR) technology using cameras on the helmet.
From the different headsets we've tested, the hardware is sound and the setup is simple, but position tracking isn't as accurate as tethered headsets with external sensors or the Rift S' outward-facing tracking cameras. Also, the Windows Mixed Reality store doesn't have as many compelling VR experiences as the Rift and SteamVR stores, though you can use SteamVR games on Windows Mixed Reality headsets, again with some software wrestling. While several third-party manufacturers worked on Windows Mixed Reality headsets over the last few years, the only current-generation Windows Mixed Reality headset is the upcoming HP Reverb G2.