Official Beautiful Katamari webpage lists it as Xbox 360 only

Crushing even the tiniest hope that Beautiful Katamari might get a Playstation 3 release is the official site. Previously on the bottom there were blurbs for mentioning the tiny prince would be rolling on the Playstation 3 and the Xbox 360. The Playstation 3 specs have been removed and Namco Bandai erased it from their lineup of Playstation 3 games.

Namco Bandai has been quietly sweeping the PS3 version under the rug by excluding it in their fact sheet and their list of E3 games, now they are confirming it to the public too.