Somewhere between phone-based VR and the wired, PC-connected Oculus Rift, Zuckerberg introduces a peek at something stand-alone and new, Oculus Teases A New Stand-Alone VR Headset.

Oculus has another new VR platform on the horizon, and it looks like something different from PC and phone-connected VR.

At Oculus Connect, Facebook CEO Mark Zuckerberg made a lengthy appearance discussing the future of VR software. He also introduced a surprise, acknowledging the need for something in hardware that’s not a PC or mobile VR headset, but is something different. It’s a stand-alone device that looks completely wireless, like a VR version of Microsoft HoloLens.

Much like HoloLens, the VR prototype uses built-in positional tracking using computer vision, tracking motion in-headset without any plug-in sensor bar camera.

Called “inside out tracking,” it’s the sort of tech that’s been awaited for a while in VR. Mixed-reality headsets like the Microsoft HoloLens use inside-out tracking, but no VR headsets on the market currently use this yet.

There are no plans for when inside-out tracking could appear in an Oculus VR product, and the teased demo at Oculus Connect was incredibly brief. But it’s a reminder that the VR hardware we see now is far from where VR hardware will end up in the next couple of years. At the least, inside-out tracking could help make a mobile VR headset like Gear VR a lot more like the PC-connected Rift, letting users walk through space like a holodeck. And it means Oculus could head towards wireless sometime in the future.