Internally designated as "NEO" official name is "PRO"
The gist of it:
1) Faster processor.
2) 4K HDR compatible.
3) $399.
4) 1TB hard drive.
5) November 10th, 2016.
PlayStation 4 "Slim" is now the regular PlayStation 4 and will be sold alongside the PRO for $299.
http://www.theverge.com/2016/9/7/127...s-release-date
EDIT:
6) 5 GHz Wi-Fi compatibility.