Though the console won't be launching until the end of the year, Nintendo has been drumming up excitement for the Wii U since June of last year. The Wii U was first shown at E3 2011 and Nintendo has an updated design at E3 2012, which is taking place this week.
To keep us interested, Nintendo has released a walk-through video of the Wii U tablet controller as well as a second, longer video that looks at the console, controller, the hardware powering the Wii U and the games that you'll be able to play when it launches.
Source: Toms Hardware