dmetras: Skyword Sword was released as a game that celebrated the 25th anniversary of the Zelda franchise.
The Japanese Version of the original Zelda was released February 21, 1986. If they delayed Skyward Sword, it wouldn't have been much of a celebration.
If I had to guess why Super Smash Bros. is coming out later for the Wii U, it's probably because it's going to be more massive than we can possibly imagine (Brawl was pretty huge), and they're no doubt bolstering the Wii U Nintendo Network to make sure it can handle the extra load that it's going to be put under. And whatever that mystery 3DS version-Wii U version tie-in Sakurai mentioned is.
There are third-party developers making games for the Wii U. With the exception of some very notable games (Bayonetta 2, Rayman Legends, Sonic: Lost World, Resident Evil: Revelations, Monster Hunter 3 Ultimate) they mostly seem to be limiting their focus to the eShop, unfortunately.
And about those Nintendo NFC figurines they've announced? Calling them "Skylanders rip-offs" is a misrepresentation. The Skylanders figures work only with the Skylanders games and a Skylandlers base. The plan for the Nintendo NFC figurines is that they'll work with any game designed for their use, without a base. The Gamepad has an NFC receiver on the front on it.
I'll conceed to the Zelda aspect; still believe they should of had a Wii U version, though. And it's possible that the Wii U version is being delayed to work on sever capacity (though 8 months seems a long time for that, especially considering they've known about a Wii U version since before the Wii U was even released, really - it was inevidable).
As for the third party games? Yes, eStore has some, but the eStore is a horrible mess; over priced, poor quality stock that is more difficult than it should be to sift through. It's not a great experience to browse the eStore. It's not like a lot of those examples are Wii U exclusives either; Monster Hunter and Sonic are on 3DS, Resident Evil 3DS and PC, same with Rayman. Bayonetta will be, and that will be cool, but it's been over a year; there should be more ports of games going to other consoles, let alone exclusives and a few non-Nintendo exclusives in general. The Wii U library is very barren, with store shelves being basically static for months. The eStore 'exclusives' feel a lot like badly ported mobile games for the most part, with a few legit gems hidden within that, sadly, would probably be better off being anywhere but on the eStore in the first place. The Nintendo company focus seems to be on the 3DS more than not, and that makes sense; it's selling. It's just a shame the 3D part of the console is beyond useless and Nintendo took yet another step back and region locked the damned thing.
And the Skylander rip offs? It may be a misrepresentation because they will work with multiple titles, but realistically you can't believe the higher ups at Nintendo didn't see the success of Skylanders and Disney Infinity and just wanted that for themselves. I will be very surprised if many games really use this, and more so if many games that *aren't* made by Nintendo do either; Link in Mario Kart would be awesome, but I don't see that expanding beyond the horizon of being able to put Link in just another Nintendo product as a reskin. They could release an awesome 'Nintendo Land 2' taking advantage of that, and that would be cool, but as a console seller? Smash was supposed to be that, and they undermined it by making a 3DS version; who is to say they won't do the exact same with this idea?