Update: It's been announced in a press conference - see on Reuters.
According to this Joystiq report and a torrent of others, Square's just confirmed Dragon Quest X as a Wii game.
It's a little unclear at the moment, but it seems the title will be exclusive to the platform.
This will be the first Dragon Quest game to grace a current gen console.
The firm also said Dragon Quest IX will be releasing for DS on March 28.