Wikipedia enlightened me just today.
Wii Chess is an upcoming video game for the Wii console. It is currently in development by Nintendo and set for release on 18 January 2008 in Europe. First information of the game was revealed on 12 December 2007. The game will be released cheaper in Europe and will be a budget title. Players can also play online courtesy of Nintendo Wi-fi Connection.
For the record, I will pwn any challengers when this gets released.