Nintendo just held their pre-E3 show today, giving insight into the Wii U before the system's full reveal on Tuesday. Watch the thirty minute video below if you missed it.
Video detail summary:
-Wii U Tablet named the "Wii U GamePad" and the final design of the controller is detailed
-Wii U Pro Controller, a 360-esque Wii U controller intended for 'hardcore' gaming
-Miiverse, a social network of Nintendo's design that loads when the Wii U is first turned on
-New Super Mario Bros. tease along with Nintendo Network integration
-Some insight into the Nintendo Network in general