The list of launch games has apparently been revealed: http://www.gameranx.com/updates/id/8279/article/nintendo-wii-u-launch-titles-officially-announced/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+gameranx+%28Gameranx%29
I don't put much stock in that, though--it says Nintendo Land won't be there launch day, which I find highly unlikely.