20 million first year? That would suggest a proper replacement for both the 3DS and the WiiU. I really doubt people would be so quick to upgrade, when we've just seen the lackluster support for the Wii U. Unless ofc they really do have the new 3d mario, zelda and metroid at launch. But I don't think they would have those games at launch because that would limit their sales.
Hmm I don't know. I want it in 2016 though, but I don't think it's possible or even the best decision.