Can you give some examples of revolutionary use cases?
I fear I've gotten cynical in my old age and all I can think of are the negatives. Charging every eight hours, already disconnected people becoming even more distracted by constantly looking at their glasses screen instead of being present, another device to upgrade every other year (I can't see this being decoupled from the phone and/or watch and, unless it's insanely expensive, I don't see Apple wanting to do so), creeps creepin' (even if Apple doesn't let you record video or take pictures or whatever, it will be jailbroken and made to do so), probably intrusive advertising introduced by third-parties...
I'm not trying to be a party pooper, I genuinely am interested in what pros would make this technology exciting. I see benefits for education and simulation / training, but I'm still having trouble finding the every day consumer value. I truly hope it goes beyond 'not having to look at your watch'...