"The Wii hardware we exhibited at E3 2006 was made specifically for the E3 show and is not the final mass-production version. Some of this hardware was cased in Nintendo GameCube housing,"
http://biz.gamedaily.com/industry/feature/?id=12739&rp=1
This is really confusing cos up to now i heard nothing about this - so does this mean the actual gameplay footage from E3 wasnt from the final wii hardware??