Well, I was really looking forward to play Rayman in a few weeks, as one of the few February 2013 titles I still had interest in, so in the short-term this is disappointing. In the long-term, when this game was originally announced I wanted to play it on other platforms, so in the end I'll get the experience I prefer anyway.
That said, it was a real **** move of Ubisoft to not only announce the game's delay 3 weeks before it was due to release, but also to announce it was delayed for a simultaneous release on the other HD platforms. I can't blame Ubisoft for cutting the exclusivity, but they could and should have handled this so much better. Wii U owners have a right to be angry at Ubisoft about this.
The big issue, of course, is what this means for the Wii U: now the Wii U will be without anything anyone could call a notable title until at least Monster Hunter in March. I personally could not care less about Monster Hunter, so for me there probably isn't a notable title on Wii U until Pikmin 3 or Wonderful 101 (whichever comes first) sometime in the Summer. That's a long time for a new platform to go without major new software, and it makes the prospects of Nintendo having to announce some sort of price cut to reinvigorate Wii U sales all the more likely.
For the time being, it looks like my Wii U will be going into storage, as I have neither the reason nor the desire to play it and Nintendo doesn't seem terribly interested in filling software voids right now. I had hoped when they released the thing last year that we'd be seeing major new Virtual Console releases at the very least to fill in the gaps. However, it seems Nintendo is satisfied with merely re-releasing games I already bought until at least the Summer. Maybe I'll take the Wii U out again in a few months to play Xenoblade or something, but for the time being it's taking up a slot by my TV my 360 could be using right now, so into the storage bin it goes.