It seems that the Xbox360 and PC can't contain the thirst of the project, but there hasn't been any confirmation it'll see Sony's console.
Of course there's plenty of writing on the wall that team Marin will be pursuing it, it's a post for a senior designer and "Playstation3 experience is required."
What more wall-writing do you need?
"Experience working with recent generation game console technology (Xbox, Xbox360, PlayStation2 or PlayStation3) and Playstation3 experience is required," read the job listing.
It should be noted that nothing specifically ties the post to the BioShock 2 project but given the value of the game it's unlikely they're working on another project parallel to the shooter.