PSN is taking a day off, at least on the surface. Behind-the-scenes, there’s probably a bunch of stuff going on we will never know about.
Players who were logged in during the beginning of the prepared outage (11 AM) will still be logged in throughout the day. Oddly, those in the safe zone include anyone who had logged into PSN within the past five days. That’s the first time that caveat has been acknowledged.
Maintenance is scheduled to run until 2AM EST, and should hopefully leave the weekend open for online play. If you have to know the instant PSN is back up, the official PlayStation Twitter account will have an all clear notice. That’s assuming of course that Twitter is up and working.