The ESRB has two games from Eidos rated for the PSP and PlayStation 3. I doubt Eidos has plans for another Pandemonium remake, but I can see them selling it as a downloadable game on the PlayStation Store. Blood Omen: Legacy of Kain looks like it’s in the same boat. Nice, but I’ll hold out for Legacy of Kain: Soul Reaver.
While both of these games are rated by the ESRB there is no indication when Sony will (if?) release then on the PlayStation Store. A handful of other rated games like Street Fighter Alpha have yet to matriculate.