Though denied in the past, it has been confirmed that Oblivion will be coming to the PS3 and PSP. The PS3 version will have 10-20 more gameplay hours, a new faction (Knights of the Nine), and other fun stuff. It is most likely a launch title as well.
Nothing is really known about the PSP version, though it will be hard to imagine the content and beautiful visuals on a handheld… we shall wait and see.
There are three new pictures from the PS3 version of the game (complete with 1up watermark):