I wonder if the NX platform may incorporate or even be centered around that 3D glasses patent Nintendo made several months ago:
http://www.gameranx.com/updates/id/22968/article/nintendo-patents-a-3d-eye-tracking-device/
The kinda interesting (or maybe annoying depending on how you look at it) is the glasses patent covers things like the glasses being able to create smells/aromas and simulate things like wind blowing against the person's face, lol.
So maybe this is going to be the centerpiece part of the NX platform (console version anyway)?