Wouldn't it be ironic if Sony took a page from Microsoft's book and secured a year of Bioshock 2 exclusivity.
I think Sony has more class than that, and can recognize the advantages developers gain from releasing multiplats. It is the only reason software sells so well on the HD consoles... there are 2 of them.
Anyways, @Op , Bioshock is a great game and if it is no longer a Microsoft timed exclusive, than that is a big win for Sony. IMO.