2K has today refused to rule out the possibility of BioShock coming to the PS3.
Earlier this week the internet exploded when eagle-eyed forum posters noticed that 2K Boston, previously Irrational Games, was advertising for programmers with Unreal Engine 3 and PS3 experience on its website.
Today a spokesperson for 2K Games told VideoGamer.com that the publisher has "nothing to announce at this time", which isn't exactly a denial, but is no-where near a confirmation either.