Zelda U is highly unlikely to release next year

[Zero999]

Metrium said:
There is no way in hell that Ninty will reveal ZeldaU at E3 and announce that it's launching 6months later. It will launch at 2015 at the earliest.

there's nothing stoping them from doing so. but E3 isn't the only option for a reveal since they can make directs anytime now.