The new Apple Vision Pro headset is arriving early next year in the United States and developers are actively working to produce applications. Some of them do not hesitate to leak information that they discover in the code of the visionOS operating system with which they interact.
Screen Mirroring function in visionOS beta 4
Thus a mention of the Screen Mirroring function was discovered in visionOS beta 4. In other words, the headset can stream its content simultaneously to an external screen, or share its display via AirPlay or FaceTime. The option already exists on headsets like the Meta Quest, and helps alleviate the feeling of exclusion of people around a user of such devices, the latter being able to share their experience in some way. Source: macrumors