"Oh Bandai Namco. You're such fibbers! It was only a month ago that you were saying you were "not aware" of a PS3 version of Eternal Sonata. Not aware? Someone is, because the game's official listing on the company's site now has the game listed as a PlayStation 3 game. No release date, but it's right there under "platforms". PlayStation 3. Could be a typo, but then, we're only a week and a bit away from TGS. Could also be announced there."
The website also lists beautiful katamari for the ps3
Update: Both Eternal Sonata and Beautiful Katamari have been taken off all listings for PS3 on the site