Playstation 3 has released in Usa these rpg's:

Marvel: Ultimate Alliance
Untold Legends: Dark Kingdom
The Elder Scrolls IV: Oblivion(w/Knights of the Nine)
Enchanted Arms
Folklore
The Elder Scrolls IV: Game of the Year Edition(Oblivion, K. of the N., The S. Isles)
The Elder Scrolls IV: The Shivering Isles(standalone expansion pack)

Spring 2008 upcoming:
The Last Remnant
Eternal Sonata
Rise of the Argonauts(?)

Fall 2008 upcoming:
FINAL FANTASY XIII!!!
Fallout 3
White Knight Story
Disgaea 3

Dreddz's post says that Star Ocean 4 is coming to PS 3, that's cool! I don't know when though. I think the early line up for Fall 2008 for PS 3 is stronger than for Xbox 360 and for Wii. Great news for PS 3! I'm getting Final Fantasy XIII and a Playstation 3.