Well then, we haven't had one of these for a while. Sony's rolled out a new firmware update for the PlayStation 4, which is mandatory. The update – numbered v3.11 for those keeping count – offers nothing other than system software stability, but you will need to download it if you want to connect to the PlayStation Network. It weighs in at just under 250MB.
Remember, you can download and install firmware updates in Rest Mode, and you can find full instructions on how to do that through here. It took us about five minutes to download the patch on a very average Internet connection, so it shouldn't take you too long. We'd recommend getting this out of the way before Fallout 4 arrives tomorrow.