Nintendo have released a chunk of information about the hardware, most of which we knew already. However there are a couple of new things. You can either read through this entire press release or simply scan the items we've marked important.

Controls
Intuitive control for anyone using the physical motion of the main Wii Remote, which resembles a television remote control. Up to four Wii Remotes can be connected at once using wireless Bluetooth technology. The wireless signal can be detected within 10 meters of the console. Both the Wii Remote and Nunchuk controllers include a three-axis motion sensor. The Wii Remote also includes a speaker, rumble feature and expansion port, and can be used as a pointer within 5 meters of the screen. The Wii Remote has a power switch, plus pad, A, B, Minus, Home, 1 and 2 buttons. The Nunchuk controller includes an analog control stick and C and Z buttons.

The Look
Wii features a compact design that will make it a natural addition to any television setup. It can be displayed either vertically or horizontally.

Media
A single self-loading media bay will play single- or double-layered 12-centimeter optical discs for Wii, as well as 8-centimeter Nintendo GameCube™ discs.

Communication
Wii can communicate with the Internet even when the power is turned off. This "WiiConnect24" service delivers a new surprise or game update, even if users do not play with Wii. Users can connect wirelessly using IEEE802.11b/g, or with a USB 2.0 LAN adaptor. Wii also can communicate wirelessly with Nintendo DS™.

Virtual Console
Wii will have downloadable access to 20 years of fan-favorite titles originally released for Nintendo® 64, the Super Nintendo Entertainment System® (SNES) and even the Nintendo Entertainment System® (NES). The Virtual Console also will feature a “best of” selection from Sega Genesis titles and games from the TurboGrafx console (a system jointly developed by NEC and Hudson). It also will be home to new games conceived by indie developers whose creativity is larger than their budgets.

The Specs
Wii has 512 megabytes of internal flash memory, two USB 2.0 ports and built-in Wi-Fi capability. A bay for an SD memory card will let players expand the internal flash memory. Design was optimized with state-of-the-art processing technologies that minimize power consumption, keep the console compact and enable the “sleepless” WiiConnect24 mode.

CPU
PowerPC CPU (code-named “Broadway”) Made with a 90 nm SOI CMOS process, jointly developed with and manufactured by IBM.

Graphics Processing Unit
Being developed with ATI

Other Features
Four ports for classic Nintendo GameCube controllers. Two slots for Nintendo GameCube Memory Cards. An AV Multi-output port for component, composite or S-video."

We'll keep you posted as Wii learn more.

[source nintendo.com]