Official Playstation Magazine UK originally reported in its March issue that the previously exclusive Xbox 360 shooter, Bioshock, was "set to makes waves on PS3." They had no basis for this rumor, but it spread like wildfire regardless.
However, 2K recently reconfirmed that Bioshock was indeed still Xbox 360 and PC exclusive. 2K stated that OPM UK is referring to one of their old press release from May at E3 2006, when they didn't provide specific platforms Bioshock would appear on.