Eurogamer: Does the console always need to be connected to the internet?
Shuhei Yoshida: You can play offline, but you may want to keep it connected. The system has the low-power mode - I don't know the official term - that the main system is shut down but the subsystem is awake. Downloading or updating or you can wake it up using either the tablet, smartphone or PS Vita.
Source for the whole interview: http://www.eurogamer...-yoshida-on-ps4