Sony is coming out with an update for the PS4 that promises minor updates as well as stability will be rolling out later tonight.
With this minor required update, stability of system software has been improved. In addition, minor refinements to elements of the system UI (such as clearly indicating when a user downloads a game and a game patch at the same time) have been introduced
If you’re a North American PS4 owner, don’t worry too much about downloading it. By default, your system will download and install the update automatically.