The PlayStation 4 Pro vs. the original PS4: What's changed?
 

With only three years since the release of the PlayStation 4, Sony isn't quite ready to give us a completely new console. But while it did unveil a new slim redesign, there's also the PlayStation 4 Pro: Not quite 4K gaming, but the new HDR looks good...

https://www.engadget.com/2016/09/07/...-original-ps4/