The PS5 will run the PS4 like the Xbox One X is running old Xbox games, most likely, boost mode right now only uses 50% of the GPU because of the way they designed the pro, they designed it with the ability to scale down by disabling half the GPU and clock speeds.
So thats a good thing, and since it will be x86 again they could do the same thing they do with the pro, download content according to whichever version you are playing.
Now there are some big questions like if the PS5 will even have a disc drive and if it does it if will run UHD discs, since 4k games are already taking up more then a blue ray can hold right now, but either way it should be compatible with the PS4 version.
I think its a good guess that games that have been announced but won't arrive soon like Deaths Stranding, The Last of us 2, Final Fantasy 7 remake, to name a few, will either be moved to the PS5 or released cross gen like you suggest.
I think you might be spot on with your prediction and I think the games will all run in 60fps on ps5 since it will have a processor that is so much more powerfull then current consoles :P
Twitter @CyberMalistix
