That's a given that is easy to predict. Games MUST push the envelope since if they didn't then as more capable GPUs come out, the game would be eclipsed by games the did push the edges.
This is why there are settings in games and GPU to bring up the frame rate or have more effects.
But let's brush all that aside. History seems to show us that such leading edge gets you about 2 years till the next thing. It doesn't mean the machine is going to stop working but that the edge keeps moving.
I am thinking about a laptop with the following specs:
Intel Core i7-8750H
Nvidia GeForce GTX 1060 (6 GB)
16 GB RAM
256 GB SSD
1T SATA
120HZ Refresh rate - Screen
It's called HP Omen 17-an180no!
I have seen that it's a good computer for gaming and that it can run even heavy games at high quality. But my question is:
For how long whould I be able to run games at at least medium quality at 60+ FPS? I mean, when new games get realesed they must of course be harder and harder to run. How long will this machine manage that? I do not currently run games like GTA V or Wither 3 but perhaps I will in the future...

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic