Sony just release a new update for PS4 System firmware with version 4.05. The latest update includes minor updates to improved performance of the PS4 system no significant changes for users. See Playstation Europe tweet.
Boot up your PS4 and you’ll see a system software update – version 4.05 is now live and improves the quality of the system performance pic.twitter.com/2kU7yN8Ikb
— PlayStation Europe (@PlayStationEU) October 25, 2016
The firmware 4.05 update size for PS4 is 297MB and can be downloaded in your console via internet. It is also recommended to update your system in order to play online gameplay. This new updates must be something a fixed with the recent DDOS attack on PS4 network.
Patch notes or Changelog will be available on console update, we will update once we have it.