This gen will be much shorter than last. 4K tvs are coming, VR is coming, neither which the current consoles can comfortably support. In 4 to 6 years cheap Steam boxes are going to be a sizeable threat to ps4/xbox one.
With cross gen games becoming the norm plus no longer selling hardware at a loss at launch, why would console companies wait 8 years and risk someone else stealing away the audience.
And since the consoles are far more straight forward to program for this time, we might not see the dramatic increases in graphics quality during the gen. Infamous SS will be looking quite old on your 65" 4K tv in 2020.







