Speculation: Maybe the NX is an Oculus rift type device. People have been speculating and rumoring all Nintendo consoles to be Virtual reality headsets. Now is actually the time where it would be most likely. Having seen Star Wars Battlefront and Silent Hills the possibility of actual really awesome console virtual reality is possible.
An Oculus rift costs $350. A Wii U controller strapped to your face costs $90. Maybe Nintendo is one of the few companies able to get the price down.
Also note, Nintendo has been experimenting with the Wii U remote in this regard. The 3d videos, Nintendo land in some ways. The wii U already has all the tech to be a VR headset. It just isn't uncomfortably tethered to your face.
Nintendo as been anti-VR and pro-AR in the recent years. They tend to feel that AR is more socially and family friendly, while VR promotes isolation. As a father of 5, as shudder at the thought of how expensive that could be.
4 years ago all I wanted was a Nintendo Console powerful as a PS3 with a Wii Motion plus. I got that in Wii U. But Evan_B is absolutely right, it never reached its full potential and its a shame it didn't. Wii U could be in my top 5 consoles all time
IF Zelda U and Star Fox actually come out and are solid releases, although I don't expect both games to show up. IF NX is at least as powerful as a PS4 ( and by next year how could it not be?) with a Netflix style game streaming service and the Trojan Horse of the untapped hybrid console market, I'll be cool.