The launch window looks like it could be
Probable/Confirmed:
New Super Mario Bros. Mii
Pikmin 3
Call of Duty: Black Ops 2
Assassin's Creed 3
Aliens: Colonial Marines
Rayman Legends
Dragon Quest X (Japan first?)
Batman: Arkham City GOTY/Wii U Edition
007 Legends
Madden NFL/NBA 2K/etc.
At least. Shouldn't be too bad. I would count on at least 1-2 more Nintendo releases and a few more Japanese titles as well.
Honestly it might be better if Nintendo doesn't entirely blow their load on the immediate launch. NSMB + Call of Duty + Assassin's Creed are three monster franchises and then you have Pikmin as well for the Nintendo fans on top of that.
If you're Nintendo maybe throw in one more game ala Wave Race or something and you got yourself a pretty solid launch window. If you have too many big titles, software sales are going to start to cannibalize each other.
