WebXR for Oculus Quest

Are there any plans to integrate WebXR functionality into CesiumJS to allow VR mode exploration on a Quest (or other HMDs) operating in WebXR?
I know there’s some functionality already in CesiumJS for Cardboard, but something for 6DoF headsets would be great.

P.S. I could not get the SandCastle Carboard demo to work properly on a Quest 2