Did you see the Nintendo Direct from yesterday?:
http://www.youtube.com/user/Nintendo?v=4MzG6lDA1A0Or, if you don't have time for that, here's the quick one minute recap by IGN:
http://www.youtube.com/watch?v=lHAXmr0OI7EThough a day one Wii U purchaser, I am still busy playing Just Dance 4 daily (for fitness) and Tekken Tag Tournament 2: Wii U Edition (man, it takes A LOT of Gs to unlock everything). However, I don't really feel like I'm experiencing much new at this point, so it's nice to know more games are coming. Even hearing Iwata simply confirm a new Mario (3D-style), Zelda (two actually, one a remake, one totally new), Mario Kart and Super Smash Bros. is nice to know, even though these games are pretty much expected from Nintendo every generation.
Of course always nice to hear are surprise announcements like the unnamed game (unless it is just "X") from Monolith Soft which clearly uses the same engine and style as Xenoblade Chronicles (unconfirmed, but could be a sequel or prequel or spinoff, or at least a spiritual successor) and Shin Megami Tensei X Fire Emblem which Iwata says is an example of Nintendo working with third party publishers (if previous games haven't indicated that already). I'm not sure I'll play the latter, but we'll see. And then a yarn-style game with Yoshi... Yoshi's Epic Yarn? Though I never really got into the Yoshi games for some reason (at least not enough to get 100% in any of them), it's still nice to see more of other Nintendo mascots.
And upcoming updates to speed up loading time! Yay!