You can play PS3 games on your PS4 with Sony's PlayStation Now streaming service — here's how

You can play PS3 and PS2 games on your PS4 or PC by signing up for PlayStation Now, Sony's game streaming service.

'Do PS4 controllers work on PS3?': How to connect your PS4 controller to a PS3 in 2 ways

PS4 controllers will work with a PS3 console, and when you use a wired connection, there is no setup involved. Here's what ...
GameSpot

Sony looking into The Last of Us PS4 discount for those with a PS3 copy

Sony is considering offering a discount for those looking to pick up the PlayStation 4 version of The Last of Us if they already own the game on PS3. "We’re looking into the business model for all ...