There's also a new headset design.
New clues to Apple's VR involvement.
The company is playing with a number of designs.
Google patent will use eye-tracking to give VR avatars accurate facial expressions.
Microsoft suggests a radial input system for text in VR.
The company is looking to help reduce the impact of motion sickness on users of virtual reality experiences.
Uber wanting to create virtual reality experiences within cars.
Could Apple be looking to release a VR HMD soon?