We gonna act like this couldn't be any more obvious?
Why not at least show the game at E3, have a story trailer, something ... anything ... the reason is the game's development is now being tailored to the NX and they can't very well show it before they show the NX platform itself (which isn't going to happen at E3 I guess).
This is Twilight Princess all over again.
Now Nintendo also has a pretty big launch title for the NX platform IMO ... whatever that is. Heck EAD Tokyo could also have a new 3D Mario also ready for a late 2016-ish launch.
Nintendo is probably taking steps now to make sure the NX isn't a repeat of the poor 3DS and Wii U launches, that means they could very well be loading the deck, perhaps they feel like NX is an all-or-nothing bet ... they can't have another slow starting console and are going to throw everything and the kitchen sink at this.
You have to admit with Zelda potentially at launch ... basically they're pretty much set for a good launch.
