X was also planned for 2014. First trailer in the Direct January 2013, new trailer at E3 2013, launch in 2014. That's how it was planned.

Another reason I briefly talked about is that Nintendo rather wants to focus on games coming in the near future. Like they said at E3. Zelda is not near future.

It's coming in a year. That's not near future? How so?

I'm hoping it's because at some point of development they saw this game could end up as empty as Twilight Princess was and decided to spend the extra time to fill it.

BUT... You also have to remember that they were so slow developing Skyward Sword after 4 years they had to pull in Monolith to finish it off for them and that game was also really small. Perhaps the new Monolith Studio near Nintendo's HQ has been working on this for a while and the main team now they've finished Xenoblade X will be dropped on it to fully complete it? Nintendo's core teams seem to be spread too thinly across the ground. I'm hoping the new president will fix this long term problem which dates back to the Gamecube.

I remember some people commenting or rumoring that Monolith is helping again the Zelda team. But they finished the game during April. The localization is done by other team I believe.

Let me try turning the question on its head...

Why show it?

What would they get out of showing it now, beyond the little teaser we've seen? It's not like anybody would be on the fence about whether to buy a Wii U, and would be convinced by a video of a game set to release about a year from now. If what they've already shown hasn't convinced you to buy a Wii U in advance, then you're going to wait for the game to release.

Showing too much of Zelda U could take attention away from their current titles. Those are the titles that Nintendo needs to put their focus on (especially Xenoblade Chronicles X).

Keeping the game out of the spotlight now is actually quite smart. They can build hype for Zelda in general using Zelda TP HD, which releases a couple of months before E3. And then, at E3, they can have a big blowout for Zelda U, and hype the hell out of it.

Think about it - a strong E3 would be Nintendo focusing on NX. An even stronger E3 would be Nintendo focusing on NX, and also showing off Zelda U properly for the first time. If NX is releasing in 2016 (I don't think it is, but for the purposes of the discussion...), then they can also show off Zelda U's NX version, which would serve well as their flagship title for launch. On the other hand, if NX is releasing in 2017 (as I'm expecting), it gives them the opportunity to hype up the Wii U in a situation where the NX would otherwise overshadow the system.

Either way, I can't see any benefit to showing off the game now.

Showing too much when they haven't show anything?

Again, explain to us about X, Yoshi Wolly World and SMTxFE, Super Smash Bros, Fire Emblem Fates and other games that they showed way before release.

They don't loose anything showing it and they loose a lot hiding it.

Interesting points, but I'll just wait and see what they actually did :p

They've shown quite a bit, overall.

We've seen the cliff scene, with Link jumping off the edge and gliding down using something very similar to the sailcloth from Wind Waker. We've seen a demonstration of Link riding Epona and using his bow, complete with bullet-time effects. We've seen footage demonstrating how you can navigate the huge world by placing markers while looking around in first-person mode. We've seen a trailer showing off a large overworld enemy that shoots lasers and Link using his bow with a weird almost-beamsword arrow. We've seen the map.

And most importantly, as their teaser this year, they've shown us a very short clip that has a lot of little details that are interesting, the most notable of which is that book with the Sheikah eye-with-tear symbol on it.

So basically, we've seen multiple types of enemies, including what amounts to a boss or miniboss type enemy, we've seen the weapon that appears to be the primary weapon in this game (the bow), we've seen map features and special items. What more should they show now?

So I'll ask again - what are they actually getting by showing it?

With previous titles, they got Wii U sales. Incidentally, they didn't show X, they teased it. Same with SMTxFE. Smash acts as a vehicle for Nintendo's other games. Fire Emblem Fates, we didn't see much of until recently. You can list off plenty of titles, but you don't seem to be able to provide an answer to my question - what do they get by showing more than what they've shown already?

I gave up on Zelda U. Nintendo can kill any hype for any game without reasons.
I just pretend this game doesn't exist. It easier that way.

Seriously? We haven't seen another enemie outside of bokoblins, and that was off-screen footage. The overworld was empty. No dungeon, not a single NPC, no town and no area like desert or forest or lake. So no, we haven't seen anything worth. No even a title.

And what can they get? anticipation to their game? And no, the showed X with a proper trailer, something that Zelda has not get after all this time. SMTxFE was announced since April 2014 and almost every time they show something, even this E3 and the release date is 2016, most likely second half. Fates got a real trailer and explanation since announcement early next year.

Again. They can win a lot, starting with confidence in the console in response to the recent rumors of being replaced next year. Hiding it just make people believe the game is ported to NX or even cancelled for the Wii U.