I think the flagship game will be the new Miyamoto IP.
And, much as I hate to say it, I think they will have a mario game, but it will be one of the 'lesser' efforts, ala Luigi's Mansion or Mario 64 DS.
SSB is almost a lock.
A fps seems likely.
Then, we'll probably have a couple of whacky Japanese games that show off the remote, and a couple of crappy american 3rd party ports.
And maybe a demo or 2 will be included with the system to show off the control's possibilities.