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
It's official -- the PS5 is backwards-compatible with PS4 games
PS5 Could Get PS3 Backwards Compatibility As PS3 Games Appear On PS Store
Can You Play PS3 Games on PS5? How Backwards Compatibility Works
PS5 Would Have Limited Backward Compatibility With PS3, PS2, And PS1
PlayStation Store gets PS3 games: is PS5 backwards compatibility next? | Metro News
PS5 definitely isn't backwards compatible with PS3 and older games | GamesRadar+
PS5 Backwards Compatibility PS3 & Older Games Denied By Jim Ryan
No PlayStation 5 backwards compatibility for PS1, PS2, and PS3 titles and very fake-looking hefty PS5 retail box gets overshadowed by Miles Morales concept design - NotebookCheck.net News