What Tom said:
Tom Henderson--who previously leaked Call of Duty and Battlefield 2042 details--has released a new video and in it, he claimed that GTA 6 will be set in a modern-day version of Vice City. This runs contrary to previous reports that GTA 6 would be set in the 1980s, with Henderson claiming that developer Rockstar wants to ensure as much freedom as possible for its staff when it comes to creating content for GTA Online
Henderson also discussed a potential for the GTA 6 map to change over time, similar to how Epic Games regularly overhauls its Fortnite map during end-of-season events. There was also a mention of GTA 6 having multiple playable characters, something which GTA 5 introduced to the series when it first came out. Even if these rumors are true, fans are going to be in for a long wait due to several factors. Henderson said that Rockstar has placed a greater emphasis on employee wellbeing in the wake of several reports detailing the crunch work conditions that were implemented before Red Dead Redemption 2 came out.
The new GTA is believed to be coming to the PS5, Xbox Series X|S, and PC and, as they are new to the market, Rockstar is allegedly waiting for more systems to be sold so as to maximize sales. Henderson also added that since Rockstar wants to avoid delaying the game, GTA 6 won't be announced early and thanks to the constant revenue stream of GTA 5, Rockstar has the luxury of being able to take its time with development on this sequel.
Original Thread surrounding Tom Henderson's Report