Sony has released a beta version of the upcoming PS4 Firmware with code number 5.50. First users have reported that the PS4 Pro console now supports supersampling, which increases the image quality of Pro-enhanced games on 1080p displays.
https://www.notebookcheck.net/PS4-Firmware-5-50-introduces-system-wide-supersampling-for-PS4-Pro.281402.0.html