Tales of Vesperia for PS3 has been listed in Nacmo Bandai's list of games that will be released in Japan later this year. The Xbox 360 version of the game is set to release in the US on August 19, 2008.
A document detailing Namco Bandai's financials and outlook for the remainder of 2008 was posted on the company's Japanese site earlier today. Interestingly, the PDF contained a release list revealing that Tales of Versperia would be coming to the Xbox 360 and PlayStation 3.
Obviously, that goes against what Namco has been saying - that Versperia is an Xbox 360 "exclusive." The uploaded document has since been edited, with any mention of Vesperia for the PS3 wiped out. A mistake, or an actual slip up? :P