While the PlayStation 4 hasn't been available in North America for a week yet, it's already facing a second firmware update. As reported prior to launch, the previous update added many new features – including Remote Play and facial recognition – but this new refresh is not quite as flashy. According to the PlayStation Blog, it augments "software stability" and "minor refinements" to elements of the platform's user interface, such as clearly indicating when a user "downloads a game and a game patch at the same time".
The console will automatically download the update if your system is connected to the Internet and in standby mode, and should be available imminently. If your device is not connected to the web, you can find details on alternative update options through here. Hopefully, this clears up any crashing issues that players have been experiencing over the past few days.