It will be interesting to see what the displays are like.

AR is _very_ hard for a number of reasons:

1) the screens are really difficult to get right: too bright and you have no battery/burn your face, too dim and you've got really effective sunglasses

2) if you don't have local dimming (ie being able to take away light rather than emit it) then everything looks shit

3) input is super hard. No keboard, no mice, no touch screen. Sure you have hand tracking, but without third party sensors, you have to have your hands in view to track them. This means gorrila arms or just plain fucking frustration.

4) without a second CPU/GPU battery box, you have no compute power. Glasses only have about enough space for 2 watt hours of battery.

5) good 6dof tracking is compute expensive without custom silicon.