PS5 Backwards Compatibility: No Support For PS3, PS2, Or PS1 Games, Says Ubisoft - GameSpot
PS4 backwards compatibility: Can You Play PS1, PS2, and PS3 Games on PS4?
Will PS5 be backward compatible with PS1, PS2, and PS3? - GameRevolution
PS5 Rumored to Be Backward Compatible With PS1, PS2, PS3, and PS4, Games Will Have Enhanced Visuals
How To Play PS1 PS2 PS3 Games On PlayStation 5 - PS5 Backwards Compatibility Guide. - YouTube
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