I'm with Ian on this one. If they wait til 2017 they're toast as hardware makers.
I mean, if we're assuming that this fall season to next fall season is the final year of retail releases for WiiU/3DS, what does that consist of?
WiiU: World of Woolly Yoshi, Xenoblade X, Mario Tennis Ultra, Star Fox U, Pokken, Amiibo Festival, Weird Anime Fire Emblem Crossover Thingy, Maybe Zelda U, Maybe Twilight Princess HD, Maybe Pikmin 4
3DS: Uhh. Mario and Luigi: Paper Jam. Happy Home Designer. Triforce Heroes. Hyrule Warriors port. Chibi Robo The Last. I think they're publishing Yokai Watch. I must be missing something.
Even if we assume there are a few Rainbow Curse level spin-off games being held back, between two platforms that's not a great showing, and a lot of the titles are pretty thin. Another full year without even a hypothetical mainline Zelda title would be a graveyard compared to even the last year of the Wii.