PS3 version definately possible, I don't know about Wii unless it's pretty much a completely different game, just part of the Bioshock franchise.
That would be really cool. I own a 360 and i really liked Bioshock, and my friend has a PS3 and keeps talking to me about how he wishes the game would come over to the ps3, so this would be pretty cool.
Sh*t, now I can't one up you anymore... Seeriously, it's coming to the point PS3 is getting more games and it scares the sh*t out of me how much devs are screwing oer microsoft because of HD.
It's nice to see a great game going to the other consoles as well, rather than being exclusive. More people deserve to play the awesome Bioshock.