IGN recently managed to get an interview with Reggie, with the topic being mainly Zelda-related. In it, he re-iterated that the title will be for the U and it will be for 2016. Some highlights of the interview are below:

IGN: We spoke to Miyamoto and he told us, Nintendo has some really great Zelda footage and chose not to show it at E3. Can you talk about the thinking behind that decision?

Reggie Fils-Aime: “It goes back to the statement i made earlier about how we view E3. We just fundamentally don’t believe in showing content at E3 that is going to be a long term proposition. We like to show content that typically will launch in the upcoming Holiday and maybe extending into the first half of the following year. And at this point, the new Zelda for Wii U is not a 2015 project."

IGN: Do you worry at all that not showing it this year sends the message to Wii U owner and the potential Wii U buyer that Zelda is not a 2016 game?

Fils-Aime: “No. I don't believe that it sends that messages. In fact, in separate interviews [Shigeru] Miyamoto has reinforced that it’s a 2016 game, and I also believe he’s reinforced that it’s a Wii U game because I know that there is that thinking floating around."

IGN: Yes, that was the reason we asked about that.

Fils-Aime: “Our mentality is more near-term when we think about E3. And, yes, we take it on a case-by-case basis. There’s also a recognition that we didn't want to frustrate the consumer. We could have scored a lot of points and showed some little tidbit of Zelda Wii U, but in our collective opinion the belief was, in the end, that would cause more frustration than benefit."

It would have been nice to see Zelda, just for confirmation that it is, indeed, coming in 2016. Just to have something tangible to talk about, but...hopefully we will see more soon.

"We could have scored a lot of points and showed some little tidbit of Zelda Wii U, but in our collective opinion the belief was, in the end, that would cause more frustration than benefit."

This phrase made me afraid about ZeldaU quality a bit... )

Its possible it could be ported to NX, or it wont, either way i will buy it on Wii U, thats how easy it is, If the NX has Wii U backwards compability maybe i sell my Wii U, depends.

Is that true for previous E3s?

I reckon this is more to do with showing off something that's been delayed and isn't going to be released for more than a year, or only showing off a tiny amount more, rather than the quality or direction causing frustration (if anything, the fact that they think showing a little more of it would "score a lot of points" shows they still think it'd be recieved well). Also might make people more frustrated next E3 if they fully reveal it and people say "We have seen it before, nothing new."

Yup Nintendo, aha. 

From the same article:

IGN: I understand that guideline and why you choose to observe that, but that must be taken on a case-by-case basis. When you guys showed Zelda last year, I would’t have believed that game was supposed to come out in Q1 or Q2. I would have thought that was a Q3 game.

Fils-Aime: “No, but when we showed it last year, we believed it was a 2015 game."

So they showed a game in 2014 thinking it'd be a 2015 game, but they won't show a game in 2015 thinking it'd be a 2016 game even though we've already seen it before. Will let you draw your own conclusions from that.

I'm going to kick your ass if Zelda U doesn't come out next year, Reggie!

? Reggie and Nintendo are not making any sense.

Guess I'll wait till next year for more info... I guess...