Sony Worldwide Studios boss Shuhei Yoshida said that the new system will be able to play games without going online.
"You can play offline, but you may want to keep it connected," he told Eurogamer.
"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."
He added: "Social is big for us, but we understand there are some people who are anti-social!
"So if you don't want to connect to anyone else, you can do that."
Microsoft's next yet-to-be-announced console is rumoured to require an always-on internet connection.
Earlier today Sony also refuted another rumour that the PS4 would block used games.
Revealed by Sony last night (February 20), the PS4 has been compared to a "supercharged PC". It features an x86 CPU, enhanced PC GPU and 8GB RAM.
New first-party games include Killzone: Shadow Fall, Infamous: Second Son and DriveClub.
Gallery - view the first images of PS4's controller and camera:
Copyright: Sony Computer Entertainment