In America and Japan at least. I haven’t yet heard when it is going to be arriving in Europe, but its going to be a 11th of November launch in America for $249 including the games to show off the new controller – tennis, bowling, boxing, golf to name but a few. Hope it gets here soon.
Read engadgets overview of the press conference here : http://www.engadget.com/2006/09/14/live-at-nintendos-nyc-wii-press-conference/
Its only going to be in white in the US, with only one controller bundled, but the online service is looking good with such things as photo sharing and avatars built in.