I don't think it's been announced by Square-Enix yet, so no one will know. Although I'm guessing it will be around Europe during March or so for the PC, the PS2 one will defenatly be later.

As Australia uses the PAL version as well as Europe, I think they'll be out around the same times. Australia may be a little later. So that's why if you're going to get the PC version, you should import it and get it MUCH quicker. Can't do this with the PS2 version though, as hardware is different.