"Anyone who already has an account can still sign in to their PlayStation Network profile, play games, and use most applications while this maintenance is carried out," the page reads.
However you won't be able to access features like Account Management, PlayStation Video, and the PlayStation Store during this time. The page also recommends that you activate your PS4 as your primary console before maintenance so as to allow you to continue playing your games, especially those that are digital or have an online dependency. Here's how:
According to Sony, you only need to do this once. Unlike most of Sony's PSN issues, it's relieving to know that this shouldn't hit most users as a surprise. Since last year, the service has been hit with some serious downtime. Hopefully the scheduled maintenance should prevent untoward issues in the months to come. Especially with some big games hitting the console next month such as Doom and Uncharted 4.