Updates Here: http://www.neogaf.com/forum/showthread.php?t=428373
This was found on the Nintendo site pretty much confirming that it's going to be announced soon:
Nintendo's investor call will be happening within the day as soon as the Tokyo Stock Exchange closes. Iwata may hint at it during that. It is to be actually announced probably at E3 with both first and third party titles shown.
Highlights:
-Tentative release date of June 2012.
-Controller screen resolution of 800x500.
-Can play games, watch movies, and more without turning on the TV by just streaming them to the controllers. Can stream to multiple controllers at once.
http://www.neogaf.com/forum/showthread.php?t=428373
This was found on the Nintendo site pretty much confirming that it's going to be announced soon:

Nintendo's investor call will be happening within the day as soon as the Tokyo Stock Exchange closes. Iwata may hint at it during that. It is to be actually announced probably at E3 with both first and third party titles shown.
Highlights:
-Tentative release date of June 2012.
-Controller screen resolution of 800x500.
-Can play games, watch movies, and more without turning on the TV by just streaming them to the controllers. Can stream to multiple controllers at once.
http://www.neogaf.com/forum/showthread.php?t=428373