In the meanwhile, if you want to play it on PC, you'll need to have a PlayStation Now subscription. Sony has begun porting some its first-party games to PC, such as Horizon Zero Dawn and Days Gone, but God of War is not yet one of those games. This is especially helpful for anyone who doesn't own a PS4 or PS5 console right now. The game is now back seemingly permanently, meaning you can technically play God of War on PC, if you're willing to stream it.
While it's been on Sony's game streaming service PlayStation Now before, it was only for a limited time. Sony Santa Monica is one of the most prestigious teams at Sony Worldwide Studios, with the studio's 2018 title God of War widely acclaimed as one of the best PS4 games available.