Nothing yet is known about GTA VI but it is understood to be in production at Rockstar. Early reports suggest Grand Theft Auto 6 will once more be set in a fictional US city although it seems like there was consideration to set it in Japan
PC System Analysis For Grand Theft Auto VI Requirements
You need a Core i7-8700K 6-Core 3.7GHz or Ryzen R7 1700X processor coupled with a GeForce GTX 1080 Ti to run Grand Theft Auto VI system requirements at recommended. You can expect to get around 60FPS at 1080p screen res on high graphics settings with this hardware. Grand Theft Auto VI needs a Core i5-4460 3.2GHz or FX-8350 processor coupled with a GeForce GTX 970 4GB to get it to run minimum system requirements. This will return around 30FPS at 720p screen res on low graphics settings, but you can also adjust the settings further to tweak. System memory for min is 8 GB. You will require a DirectX 12 GPU. In short you need a 3 year old PC for best Grand Theft Auto VI performance.