Seriously though, why does everyone want an update?
Gamecube support? This is a GIFT. They didn't have to include Gamecube support, heck most modchips/softmods don't even have backwards compatability.
Audio Fix? If you haven't played/bought the game that you want by NOW then seriously, I don't think you care. If you do care still, go get a gamecube for 20$ and go buy that game.
Multi Region Support. Unless you are talking about Pal games, it seems irrelevant to me since most people wouldn't be able to even understand the game to begin with.