It looks like somebody has released all, and I mean ALL of the Wii's specs!  I'm not sure if it's fake or not but it's worth checking out...

"So far Nintendo have done a very credible job in keeping information regarding the Wii to a minimum. Well all that has just changed! An anonymous Wii developer has sent to us slurry of information regarding Nintendo’s next-gen console, all that’s left now is a confirmed release date and price to complete the puzzle."

http://www.maxconsole.net/?mode=news&newsid=8802