Nintendo of America has lifted the lid on their Spring line-up for the Nintendo 3DS, the Nintendo Wii and the Nintendo DS. There are only three titles coming from the publisher themselves though.
The biggest title is The Legend of Zelda: Ocarine of Time 3D, which will be coming out on the 19th of June. But also confirmed for elease before the end of June are: Cave Story 3D (June 28th), Dream Trigger 3D (April), BlazBlue: Continuum Shift II (May 24th) and Dead or Alive: Dimensions (May).
For the Wii, there isn't a great deal to be excited about. You've got The Conduit 2 (releases today), Wii Play: Motion (June 13th), Thor: God of Thunder (May 3rd) and Lego Pirates of the Caribbean (May).
When you get down to the Nintendo DS, things are looking even more sparse. No first-party titles, and the third-party ones aren't exactly all that appealing. Duke Nukem: Critical Mass is probably the stand-out title, but that could release at any point.