It hasn’t been announced. GTA 5 was released for PC about 18 months after it hit consoles.

half of gta 5 online revenue is from PC. They will definitely release GTA 6 for PC, maybe half a year after the console release to get people to double dip (those who bought it on PS5 and then buy it again on PC cause they prefer playing on PC)

Eventually it will, but it is console exclusive for some indeterminate amount of time. Google seems to indicate that this was 19 months for GTA5. Not entirely sure why, the tinfoil hat theory seems to be it's to encourage people to buy it a second time to play multiplayer with their PC friends. Alternatively, it could just be it's easier to get some fixed targets out the door than worry about broad optimizations.

A bit disappointing either way though as someone whose only console is a Nintendo Switch 2.

Not initially, perhaps 2 years later