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
PS3 Titles are Appearing on The PS5 Store - GamerBraves
PS5 Backwards Compatibility: Can You Play PS3, PS2, and PS1 Games on PlayStation 5? | Push Square
PS5 Might Not Be Backwards Compatible With PS3, PS2, PS1 Games | Save State - YouTube
Sony patent suggests PS3-era peripheral compatibility could come to PS5 | VGC
No, the PS5 won't be backwards compatible with PS3, PS2, or PS1 games - Clocked
Ubisoft says PS5 won't be backward compatible with PS3, PS2 or PS1 | TechSpot
PS3 games on PS5 are remnants of PS Now, not backward compatibility
Can You Play PS3 Games On A PS5? - Student Beans Blog
Here's Why The PS5 Can't Play PS3 Games
The only reason I want PS3 backwards compatibility on PS5 : r/k_on
Is the PS5 backwards compatible with PS2, PS3, and PS4 games?
Ubisoft says PS5 won't be backward compatible with PS3, PS2 or PS1 | TechSpot