Wow, pretty big press release from Nintendo. The important bits...
Rhythm Heaven / DSi coming April 5th (old news, but some may not have seen it.)
Excitebots: Trick Racing announced and coming April 20th. I think we can assume it is the Monster Games Excite Truck follow up hinted at before? Not sure why they did this whole stealth release though.
Punch-out!! coming May 18th. And I still have no idea if its a remake or a brand new game.
The Legendary Starfy coming June 8th. Took them long enough to get this franchise over here! It's pretty big in Japan.
The Conduit announced for "between now and June."
There is a partial release date list on the link as well. Not too much we didn't know about there though...