Grand Theft Auto 6: Release date and all you need to know (pocket-lint.com)
GTA 6 platforms
Probably the other key detail contained in that first big leak around GTA 6 concerned the platforms it's likely to release on. Obviously, GTA 5 came out toward the tail end of a console generation, releasing on the PS3 and Xbox 360, then being re-released with better performance and graphics on the next set of consoles.
Apparently, that pattern won't be repeated with GTA 6, though. The leak suggests that the game will be exclusive to the Playstation 5 and Microsoft's Xbox Series X and S.
Given that those consoles will have been out for at least a couple of years upon release, that's entirely credible.
However, given that Red Dead Redemption 2 took a lot less time to come to PC players than GTA 5 did years ago, it would be slightly surprising if GTA 6 doesn't also make its way to PC within a year of release.