I thought Nintendo just said "upcomnig future game" in that Nintendo Direct. But I could be wrong. I did watch the EU and not the NA direct so you could have gotten slightly different info to me. Even still, we all know the only game this could be is Zelda U.
Supposedly that is the rumour floating around. That TPHD data on the wolf amiibo can be read by Zelda U. (well it's an upcoming future game, we all jsut assume that to be Zelda U)
I think this will be like Oracle of Ages/Seasons. Beat both games or do specific things on both games and you get...