Comment by chpmrc

They gave 30 min demos to WWDC attendees the following day.

I'm excited mainly for two reasons: fantastic eye and hand tracking (according to reviewers such as MKBHD) and replicating my office/entertainment setup wherever I am (except for shared experiences, that is).

I think Apple tried to nail the seamlessness of the experience, rather than give you some amazing use case nobody ever thought of. That will be a good challenge for developers.