Sony has revealed details on the PS5.
Some things of note:
-There is ray-tracing acceleration in the GPU hardware.
-It's capable of playing 4K BluRays.
-Solid-state drive
-Physical games for the PS5 will use 100GB optical disks
-"However, game installation (which is mandatory, given the speed difference between the SSD and the optical drive) will be a bit different than in the PS4. This time around, aided in part by the simplified game data possible with the SSD, Sony is changing its approach to storage, making for a more configurable installation—and removal—process. "Rather than treating games like a big block of data," Cerny says, "we're allowing finer-grained access to the data." That could mean the ability to install
just a game's multiplayer campaign, leaving the single-player campaign for another time, or just installing the whole thing and then deleting the single-player campaign once you've finished it. "
-Controller may have a microphone for a voice-controlled assistant ala Alexa (but nothing official)
-Haptics feedback (that could be interesting, as it's an interesting feature on the Steam controller)