Nintendo announced their latest console at E3 on June 7th, 2011. The console will be release in 2012. Below are the details from the Nintendo press site.

With a revolutionary new touch screen controller, precision motion controls, and full HD graphics, a whole new world of play styles and gaming possibilities is on the horizon. The time is coming to truly expand your idea about what a game console is—and can be.


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Nintendo Wii U System Specs

Launches: 2012
Size: Approximately 1.8 inches tall, 6.8 inches wide and 10.5 inches long.
New Controller: The new controller incorporates a 6.2-inch, 16:9 touch screen and traditional button controls, including two analog Circle Pads. This combination removes the traditional barriers between games, players and the TV by creating a second window into the video game world. The rechargeable controller includes a Power button, Home button, +Control Pad, A/B/X/Y buttons, L/R buttons and ZL/ZR buttons. It includes a built-in accelerometer and gyroscope, rumble feature, camera, a microphone, stereo speakers, a sensor strip and a stylus.Other Controls: Up to four Wii Remote™ (or Wii Remote Plus) controllers can be connected at once. The new console supports all Wii™ controllers and input devices, including the Nunchuk™ controller, Classic ControllerTM, Classic Controller ProTM and Wii Balance Board™.
Media: A single self-loading media bay will play 12-centimeter proprietary high-density optical discs for the new console, as well as 12-centimeter Wii optical discs.
Video Output: Supports 1080p, 1080i, 720p, 480p and 480i. Compatible cables include HDMI, component, S-video and composite.
Audio Output: Uses AV Multi Out connector. Six-channel PCM linear output through HDMI.
Storage: The console will have internal flash memory, as well as the option to expand its memory using either an SD memory card or an external USB hard disk drive.
CPU: IBM Power®-based multi-core microprocessor.
Other: Four USB 2.0 connector slots are included. The new console is backward compatible with Wii games and Wii accessories.


Source: http://e3.nintendo.com/