It would be a massive undertaking to make all PS3 games available for download. That shit just isn't going to happen, there's way too much work involved. You might see more "Definitive Editions" (the new HD Remasters) re-released on the PS4 though on a case by case basis.It's fucking horseshit that you can't play most PS3 games on the new console. I understand that the systems use different architecture, but why not make all ps3 games available for download? Naughty Dog's releasing the DLC for The Last of Us on ps4 doesn't make sense under those circumstances.
And uh, I don't see anything about that TLoU DLC being released on the PS4 besides some people speculating crap.