Aura7541 on 28 January 2017
The video is all speculation, but I'm pretty certain the PS5 will be at least BC with PS4 games because of the x86 architecture. Sony knows that they will get a whole lot of shit if they don't do it. It's also a great way to bring the PS4 userbase over to the PS5, especially if the launch lineup isn't up to snuff.
