The new
Iwata Asks for the 3DS has some really interesting stuff, as usual. The Gamecube having the same 3D capabilities as the 3DS so long as you attach a special LCD screen on it was a surprising tidbit.
Also, judging by how much they talk about Luigi's Mansion and how they had a functional 3D version of it back then, I wouldn't be surprised if we see that ported to the 3DS within the launch period.