Nintendo has unveiled the Wii U at the E3 2012 trade show, set for a holiday release this year. The successor to the company's groundbreaking Wii console, the Wii U comes with two wireless Game Pad touch-screen controllers that are designed to look and function like tablets. Sporting a 6.2-inch display, each device is equipped with traditional Nintendo buttons on the side, as well as two analogue sticks. There's also a headphone jack, microphone, and camera in front for video chat. (Also included are "pro" controllers without touch controls, catering to hardcore gamers.) While a strong line-up of new first- and third-party games is set to launch with the high-definition console, Wii users will be happy to learn their old games are backwards compatible with the new system. Go here for more details, and check out a pair of introductory videos below.