Sony has published and released the firmware update to the PlayStation 4 so that the system can do all of the nifty things it's been said that it can. The update is required to use any of the PSNSM features, and it's supposed to provide enhanced security.
Of course, it's better to download the firmware onto a compatible USB now rather than waiting for the 300MB+ file to download while everyone is doing it on launch day. You can find the file on Sony's official site here.
