I don't see other possibility to be honest. So 100% likely for me.
Zelda games take a lot of time to be made, and if Zelda U is not ported to the NX, then that would probably mean that until Zelda U is finished they won't start working on Zelda for NX.
And if wii u buyers are already burnt because of the lack of Zelda's on the wii u (let´s not count the hd remaster, I didn't play it when it was released and I bought it for the wii u but for me is not like a "real" Zelda) the situation would be the same with the NX, the game would be coming out at the end of the third year if not later, and that is late for a game so hyped as Zelda series.
I have read a lot of posts from people saying that if they port Zelda wiiu to the nx they would feel betrayed because they were waiting the game for the wii u and not for the nx.
The game would be coming to the wii u anyway so why the complaint? Why do people care if it comes also for the NX? The more platforms the better. Aren't people always complaining that not a single mainline pokemon has been in a console ever? Wouldn't they be happy if it was?
So it's the same for Zelda U/NX. The more platforms, the more players can enjoy the game.
The only case where I would understand the outrage is if they don´t release the new Zelda for the wii u, only for the NX. Then I would be really pissed off too.
