I'd say very likely to happen and I don't see why not either, it'll be the biggest installment in the franchise yet and the U isn't going to hit desired numbers so why not maximize the game's reach and have an NX version as well. It'd give the NX early momentum with out the need to remaster the game, Zelda games take 5 years between main installments on console so it'd be a while before NX gets a dedicated title.
Best selling Zelda game is TP as a result of the same treatment, the way the game was delayed after being confirmed for a 2015 release makes it seem a lot more likely as the same happened to TP.







