Industry analysts have suggested that Rockstar will launch GTA 5 for PS4 but that the next-gen title will not be available at launch.
GTA 5 Launches Double RP Event, Lets You Get a Head Start on Xbox One/PS4 - GameSpot
The PS5 version of GTA Online does not allow cross play with the PS4 version : r/PlayStationPlus
Ex-Rockstar Dev Tries to Explain Why GTA 6 Is Coming to PC After PS5 and Xbox Series X and S - IGN
GTA 5 Xbox One, PS4 and PC Differences - GTA 5 Guide - IGN
Grand Theft Auto V (PS4) : Video Games
PS4 GTA 5 and The Last of Us $400 Bundle Announced - GameSpot
Grand Theft Auto Online - Wikipedia
My GTA 5 is not loading : r/GTA
When GTA 6 Online comes out: Fans predict when Rockstar will drop support for GTA Online on PS4 and Xbox One
GTA 5 receives title update 1.62 on PS4
Grand Theft Auto V
How to transfer GTA 5 Story Mode progress to PS5 and XSX
GTA Online Players Transferring from PS4 Get a Free Car Supercharged for PS5
PC players will probably have to wait even longer for Grand Theft Auto VI
Rockstar Games confirms GTA VI will be unplayable for millions of people at launch as trailer finally arrives