It was hard to navigate around Gamespot and find this title, and I didn't even think about looking for GameCube. But, hey, that's great if your a 'cube owner.
According to Hiroaki Yotoriyama, the producer of Soul Calibur 2, the game (running on the PS2-esque system 246 arcade board) won't be released until around June of 2002..
Hasao Nakamura wants Yotoriyama to release all three versions of the game (GC, PS2 and XBOX) simultaineous release.....this from an interview with Yotoriyama in the December issue of Next Generation Magazine..
Expect to see the 3 console versions of the game released in the fall...