If you came to the Nintendo conference expecting the announcement for new games, I'm afraid you'll have to wait till a separate reveal tomorrow. What they did show was definitely nothing unexpected and the distinct lack of third-party titles made me a little sad.
Pikmin 3
The previous installment came out in 2004 so a sequel has been a long time coming. New Pikmin types and a tease about 4 new characters. I can only assume that they will all be simultaneously working together to solve maps, allowing other players to drop-in and drop-out using the second WiiU gamepad or any of the other Wii controllers.