massive potential here!
I see MS coming out with this towards the middle/end of the Xbox One's lifecycle, similar to Kinect.
With well thought out implementation and decent marketing this can be massive.
I also feel though that certain parts of the demo felt off, but like others have said this is just a POC.
they should release holiday 2014. This would ramp up sales and get many devolopers on board early.
Sooner the better for sure. But I don't see that happening.
They will also need to get this down to a decent price, the current system is already quite expensive. They also need to figure out exactly how they plan on using it. I see a proper reveal at E3 2014 but released in 2015.
These are just complete guesses obviously.