Hard to say exactly, seems likely the NX version of Zelda would be a launch game, assuming it's releasing early 2016 on Wii U.
I can buy a new 3D Mario game, which could be a launch game, depends on the scope of the project.
Retro are rumored to be working on a new IP, so maybe that could be late Summer, early Fall.
Hopefully Nintendo have a few new IPs target at fresh audiences, to bring in new gamers.
There hasn't been an F-Zero for ages, maybe one of those at some point or a Wave Race, either would be cool as launch games.
Get some 3rd party like Ubisoft to make a new IP to bring in 3rd party audiences or maybe Beyond Good and Evil 2 could be something of a remake, evolving the gameplay and updating the franchise to make it fresh for new audiences too.
God knows though really, hopefully Emily Roger's comment about NX's output being huge was true.
I wouldn't mind seeing some cool indies and stuff developed like Splatoon was.
