According to IGN Sony has officially confirmed that LocoRoco will be coming to the PlayStation 3. The game will be available as a PlayStation Network Download.
The PlayStation 3 version of LocoRoco has been rumoured ever since trophies from LocoRoco showed up in a teaser video for Sony's new online service Home a few months ago. The game is tentatively titled Buu Buu Cocoreccho! by LocoRoco.