Prediction - PS6 will not be designed to replace the PS5.

[Qwark]

As much as I would prefer the PS6 to be the follow up of the PS5, but stronger and better, I doubt Devs could keep up to begin with. PS5 games that take advantage of the hardware are already very expensive to develop. Increase the power would also increase the budget necessary. Most games do not sell good enough to warrant a 200+ million budget, let alone a 400 million budget.