In a recent interview was said that the "unique elements" new to the console weren't yet revealed...
I read that too and I...don't believe it. I think that there is more to reveal but I don't think it's gonna be anything mindblowing since they already mentioned: SSD, hardware ray tracing, backwards compatibility, haptic controllers, new UI menu with game pause features and 3D surround sound.
I think it's just corporate talk since all they had to reveal was the logo. Although I'll be very happy to be wrong about this if they come out with something that isn't gimmicky and hasn't been revealed yet.
Either way, I need to start saving. PS5 will be worth it to me just for the ability to play all my PS4 library with better load times.