PlayStation Store gets PS3 games: is PS5 backwards compatibility next?

Rumours of a PlayStation version of Game Pass have increased, with what seems to be a new approach to backwards compatibility on PS5.

PS5 Won't Be Backwards Compatible With PS3, PS2, or PS1 Games - IGN

PlayStation 5 backward compatibility: PS1, PS2, PS3 games unplayable

Choosing the Right PlayStation 5

PS3 Games Are Appearing On The PS5 PlayStation Store

Sony Demos PlayStation 5 Backward Compatibility

PS3 games appear on the PS5 store, backward compatibility coming soon?

PS3 games on PS5 are remnants of PS Now, not backward compatibility

Will every PS4 game be backward compatible on PS5?

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

PS4 Backwards Compatibility: Can You Play PS1, PS2, and PS3 Games on PS4?