Well, they can release a rumble controller, but they can't change games to be compatible with it.
I'd love Virtua Fighter 5, but I'll get that on 360. I don't like racing games, AT ALL, and the shitty analog sticks totally render FPS' unplayable on PS2, so in reality there's only one must have game for me, which is already coming out on 360. In fact, most of the "must have" games on PS3 are coming out on 360 anyway.