I mean, there are many reasons to delay. Aonuma is really bad at timing himself and he lets feature creep take over like nobody else. Let's keep in mind that SS took five years too, longer than TP did on "two" platforms. Considering how bad Zelda U looked in that demo, how bad Aonuma is at his job, and the struggles Nintendo as a whole has had since upgrading to HD, it's not unreasonable that a development delay came first. I mean, an NX port is almost guaranteed at this point, but looking at the facts it's very possible Aonuma legitimately thought he could get the game done in 2015, until he saw a shiny object and delayed the game to revamp it around the object, and then Nintendo just said "okay, just work on an NX Port too then." Why else would they have made him and only him announce the delay, after all?

*Keep in mind I love Aonuma and Zelda as a franchise. I'm just stating the truth when I say he's pretty bad at his job, not that it's an easy job to do mind you. I'm also just stating a truth when I say that Zelda U looked bad; graphically it's good if a bit washed out, but there was even less to do than in TP, and that's what they WANTED to show us! If that's four to five years of dev time, a full year ago, I can't imagine a year was ever going to be enough for the Zelda team at EAD to finish it reasonably.  

HD remake of GC version of Twilight Princess would be awesome. I'd buy it.

Due to reading the original famitsu article and it not specifically referencing Zelda U, but instead a "Wii U version" (the latest 3DS zelda ported to WiiU?) I have slightly modified the title to be broader. Please keep in mind that I read Japanese natively, not through a trashy translator.

Additionally read the update here:
http://www.gamnesia.com/news/Famitsu-Will-Publish-News-About-The-Legend-of-Zelda-for-Wii-U-on-November-5
As they came to the same conclusion.

Well that's an anti climax. Not a huge surprise but still.

You said itself, "The problem with this comparision is that at this time we had from TP 3 trailers, a logo, a name and demos, while from the new one we have a 40 seconds teaser and a couple of minutes from off-screen footage that doesn't look as good as the teaser.

Why we didn't see anything similar for Zelda U if its game was finished and delayed only to be launched on NX too!? I think they really delayed game because they couldn't finish this year, not just because of NX. Of course it's not move completely to NX.

Can you please translate whole part regardless Zelda U/Wii U version and 30th anniversary!?

Eh too much messing about, but the long and short of it is this, 

Will be a special article on the 3DS title, with a small section with Eiji Aonuma discussing the untold story of a WiiU version which is currently under development, to welcome in the 30th anniversary of Zelda in 2016.

The problem is the famitsu page does not specifically mention Zelda U, it mentions a "WiiU Version" after talking about the current 3DS title which could easilly mean a WiiU port/build of the current 3DS title.

it doesn't however mean that the famitsu issue will 100% not have any news of Zelda U, just that the mention of 2016 Zelda is in reference to the 30th anniversary, not a specific game, and the overall wording (In Japanese) seems specifically designed to cause that mixup, likely to build anticipation and boost sales of the magazine prior to its release, wouldn't be the first time Famitsu have done it and won't be the last.

I'll just buy Novembers famitsu the day it comes out and translate the actual article instead.

So basically nothing. :)

Tnx.

I'm pretty sure someone guessed this would happen.

Here's what Aonuma said:

“This year we wanted a Majora’s Mask concert, so it is not impossible that there may be a 30th anniversary concert next year. However, as we are trying to complete the new Zelda as fast as possible, that is all that is on our minds. That being said, we hope something will take form for the 30th anniversary. It is especially important to a producer of the series, so I hope to give something everyone can look forward to next year.”

...

“We’re doing our best (in regards to Zelda for Wii U). Everyday we improve it bit by bit. It is something that requires plenty of time, however, so please believe in us and wait.”

I hate to say, but there's a rumor about the delay. I'll try to look for the source, but that rumor says something like this:

Testers tried the game, and they found to be boring. Specially 2 parts: overworld and NPC's. The quote was something like it was not funny to travel around the world going from dungeon to dungeon. Also, NPC's were bland and don't have any effect in the story or progression, a issue that was more evident after Majora's Mask 3D. That was a big reason to delay.

I don't want to believe this because I still have hope that Aonuma is not as terrible as this. 4 years and the only thing he can develop is a bland title? No, I refuse to believe.

I agree with you. Aonuma is bad at his job and I'm serious when I said he needs to step down. Maybe he is bored or incompetent, but he can't handled the franchise anymore. Fujibayashi (Skyward Sword, Oracle games) did a great job and think he can do even better. I'd love tobe Koizumi, but he was promoted and now he is in lead of the software planning in general. High hopes.

Yes. Another big fuck you Zelda fans, keep buying our crappy games like Triforce Heroes.