During the Future of Gaming trade show, RockStar announced plans to release GTA 5 on the PlayStation 5. The release will take place next year. Also, GTA Online will be made a separate client and will provide a free three-month access to everyone who purchases GTA 5 for PS5.
It is understandable that we are waiting for visual and sound improvements, the game will become even more modern and colorful. Most likely, the graphic component will be close to the picture from the PC.
Note that this is the fourth release of the game. It first appeared in 2013 on PS3 and Xbox 360, later on PS4, then on PC and now on PS5.