@saft: Yakuza 5 is already made, I don't think that Sony can tell Sega which game they should translate.
Sony could put up the money to pay for the translation to have Sega do it, which is the more likely scenario if there's enough of a demand for it.
People have been tweeting @giocorsi on Twitter about things like this, he seems to be Sony's guy for getting ports/translations/games on the board that otherwise wouldn't be considered.
Fell asleep before I got to see most of the conference, saw all the Vita stuff, which went on forever, Vita obviously doing a lot better in Japan than here. A PS4 EDF sounds great tho, and that Deep Down game sounds pretty awesome.