Nintendo has announced a GameCube controller adapter for the Wii U in a video advertising for the upcoming Super Smash Bros. tournament earlier today. The video does not specify a release date or whether the gamecube controller adapter will be sold online or in stores. In the meantime, check out the video below for the official unveiling and information about the Super Smash Bros. tournament. Interesting facts include Geoff Keighley will be hosting the tournament and participants will choose a character from a limited roster instead of the unannounced full roster. Super Smash Bros. for the Wii U has a Q4 2014 release while the 3DS version has a Q3 2014 release date.