Graphics hit a wall because we went from 30fps to 60fps.

There are still games that run at 30fps like hell blade 2. It probably has the best graphics right now.

The PS6 will actually be a pretty big upgrade do to materials and lighting.

Apparently apple is entering the gaming market with a console as well. The Mac mini is pretty impressive. I don't doubt apple engineers can make a good console. But at the end of the day it's all about the games.