Time for some speculation! Now, unless we hear otherwise, Grand Theft Auto 6 will probably happen eventually. It's only a matter of when. While that "when" is still up in the air, the title recently popped up on an acting resume for motion capture actor Tim Neff, who listed both Red Dead Redemption 2 and Grand Theft Auto 6 on his CV.
The resume was picked up by NeoGAF and doesn't reveal specifically what role Neff might have done mocap work for in either Rockstar titles. The actor also posted an Instagram photo (since removed) of him visiting Rockstar San Diego back in February, meaning he's at least had contact with the people from Rockstar.
As VG247 reports, the Grand Theft Auto 6 listing could very well be a fake from Rockstar who told Neff his work would be for GTA 6 when in actuality it could be for a different project. This is a tactic some video game and movie studios employ to prevent leaks.
Still, a report from last year claimed that Rockstar already began "preliminary work" on GTA 6. Although if production only started last year, GTA 6 is probably still very early in development.
Meanwhile, Grand Theft Auto Online is still receiving regular content updates, and Red Dead Redemption 2 is Rockstar's biggest release in the foreseeable future so the company probably won't surprise announce the game anytime soon. But it's interesting to see the first mention of Grand Theft Auto 6 out in the wild.