Looks like 4A games and Deep Silver have released the PC specs for their upcoming game Metro Exodus. Taking a look through the list, it appears that most PCs built in the last couple of years should be able to run the game under the minimum settings without much of a problem. However, if you are looking to go full-on 4K at 60 FPS, then they are suggesting having the latest I9 CPU and a RTX 2080TI card to achieve maximum quality. That sure seems like a lot of GPU horsepower, but I know several folks that are more than willing to give it a run under those conditions to see if the game quality is up to task.
Meanwhile, if you are planning on getting this and want better than 1080P at 30 FPS, you may want to start an upgrade project on your PC.