OpenXR is the official name of the Khronos Group's new standard for virtual reality and augmented reality. Hopefully we will see Valve and other companies move towards this instead of their own implementations.
From their news post:
QuoteWe are pleased to announce the Khronos VR Initiative has decided on the name of the upcoming open standard for virtual reality and augmented reality: OpenXR™! Comprised of a who’s-who of industry leaders, the OpenXR working group is creating an open and royalty-free standard for VR and AR applications and devices. OpenXR will encourage innovation while accelerating market growth and user adoption.
I'm glad they've done this, as the VR space is already a mess. You have SteamVR, OSVR, Oculus, Samsung Gear VR, Daydream and there's probably others.
Fragmentation like this is bad for everyone, mostly us as the consumers of these devices. Support for specific devices, locking out other devices and so on is bad for us and bad for VR's growth. Hopefully if OpenXR moves quickly it can help to fix this for us all.
Khronos already has a lot of partners like AMD, ARM, Google, Unity, Valve, NVIDIA and the list goes on. So they should hopefully have enough resources and partners to pull it off.
See their news post here.