Daily Reaction: Does PS5 Backwards Compatibility Matter?
Recently there's an influx of “PS5 backwards compatible” articles on google reporting it will play ps1 through ps4 titles. If it's true, much respect to Sony. : r/PS3
PS5 backward compatibility: PS4 games list, USB external drive support - Polygon
Almost' All Top PS4 Games Will Be Playable on PS5 at Launch
PS5 backwards compatibility will cover all PS2, PS3, and PS4 games according to Turkish retailer - NotebookCheck.net News
PS5 Backward Compatibility Further Detailed, Unsupported PS4 Games Listed