Wii 2 / II / U – The New 2011 / 2012 Wii Replacement From Nintendo

The Wii U hardware spec:

The Wii U CPU will be a custom IBM POWER6 chip
The Wii U will have a custom souped-up Radeon 4000-series R770 GPU with 1GB of RAM
The Wii U console will come with internal Flash memory, confirming rumors that it will not ship with an internal hard drive.
To Avoid Paying Licensing Fees to Sony, the Wii U will not support DVD or Blu-ray playback
The Will U will support USB, SD and HDMI at 1080P
The Wii U will have legacy support for Wii — but not GameCube
The Wii U controller is 6.2” 854×480 16:9 with an accelerometer and rumbler along with a front facing camera
The Wii U has support for up to four Wii Remotes at the same time. All Wii controllers, including the Nunchuk, Classic Controller, and Wii Balance board are all backwards compatible.

Below is the video announcement video from Nintendo about the Wii U, the replacement for the Wii and a quick technical analysis: