Sony has far-reaching history when it comes to backward compatibility, from accepting the concept of more recent misunderstanding as an unused feature. We have already seen the first details for the PlayStation 5, and they include backward compatibility with PS4.
Mark Cerny, who topped the PS4 system master, said the next generation PlayStation (which is still not defined in the name of "PlayStation 5") uses a similar architecture to its predecessor, which permitting feature. It also uses physical discs, and Cerny expects some games to be released on both consoles.
However, PS4 games will run faster on PS5, thanks to the solid-state drive (SSD) integration. For example, Cerny compared the load times for a quick trip to Spider-Man. The PS4 Pro load took almost 1
We still do not know how far the next generation of PlayStation is. Last year, the PlayStation ruler, John Kodera, indicated that the new system was only three years old. That means that it's just two years away, so either Sony is preparing a long ramp to launch or the timing is accelerating.