Hi
System Software version 4.72 for the PlayStation 4 has been released today.
Main features in system software update 4.72
This system software update improves system performance.
To update the System Software using your PS4 go to [Settings] > [System Software Update] and click 'Next' and then 'Update'.
If for any reason you cannot use your PS4 to download the update, it is also available to download and install using a computer and USB storage device.
*Please note it may take a short while for the page to be updated with the new version file.
You can also see tips in this thread for updating the System Software should you run into any issues.