One of the things that flashed by in the video was Windows 8 support,
Touch screen support with basic multitouch.
That is incredible!
To control everything by multitouch on a tablet, we would have basically a near-perfect console emulation, all control surfaces would become pretty much redundant.
Granted, current tablets are small. But presumably it will be possible to flick around on the surface like an iPhone.
I have just become more excited!