Thought they prooved it fake already on Reddit. Nintendo wouldn't write confidential property on their stuff they would have anything to point a prototype embedded onto the shell of the device.
If it is real... this is a huge projected failure, I have no idea if Nintendo knows how much of a pain in the ass virtual buttons are.
Edit:Yep it has been proven fake by some guy at Reddit, right now near the bottom of the page some guy pointed out all the flaws with this, and basically said it was a printed screenshot of the Unreal Engine 4 Demo with a led light box behind it., as for the screen its probably a sheet of laminate.
In a nutshell, its a fake confirmed.