What is the most interesting feature from visionos 2?

One of the most interesting features from visionOS 2 is the enhanced scene understanding capabilities. This includes the ability to detect planes in all orientations, allowing for anchoring objects on various surfaces in the user's surroundings. Additionally, visionOS 2 introduces room anchors that consider the user's surroundings on a per-room basis and can even detect a user's movement across rooms. Another notable feature is the new object tracking API, which allows developers to attach virtual content to individual objects found around the user, enabling new dimensions of interactivity.

For more details, you can check out the Platforms State of the Union session.