All those technologies had all the basic pieces in place. A use case, a way to interact with them, an actual demonstration of the technology. I admit that it took me several weeks to realise the potential of the iPad though.

Brin has been seen wearing these for a while now. Why can't we see some basic software and interaction? There a lots of potential uses for wearable computers, especially one with a HUD. Even if all we can do is use it as another form of input/output for your phone or other devices.

As far as I can tell and google, all we saw today was a few stunts with people wearing little cameras. We'll have to wait until they start releasing the dev kits to see if there's actually anything to this particular attempt. Hopefully they will also have a product at the same time.