The Apple Vision Pro is a head-worn computer released by Apple, Inc. It went on sale in early 2024. Its cost at launch is $3500. It is impossible to demo in the stores unless you have an Apple ID.
The vision pro runs visionOS, which is a boring sad flat-panel based operating system inside a 3D headset.
The Vision Pro is locked down, so it is impossible to load a custom operating system on it. It is impossible to develop your own apps on it without being connected to Apple's signing servers.