"If you've signed in to PlayStation Network any time since January 20th you will be able to play games online and access partner apps such as Netflix during this maintenance period," a forum post from PlayStation Senior Community Manager Paul Sullivan announced yesterday. The scheduled maintenance will disable access to the PlayStation Store, PlayStation Home and account management sections of PlayStation devices.
Sony suggests players log into the PlayStation Network prior to January 27 to ensure they can access their favorite online content. If your favorite online content includes running Battlefield 4 issue-free, however, maybe throw a prayer to the gods of networking into the mix.
Sony PlayStation 3 (late 2012)
Sony PlayStation 4