It's time once again for the PlayStation Network to be poked, prodded and generally fiddled around with by Sony's countless technicians and maintenance cyborgs. As per usual, 13 hours chock full of network rejiggering are scheduled to begin tomorrow morning at 9 a.m. EST, during which time the PSN Store, PlayStation Home, Account Management services and online play will be unavailable.

PlayStation websites hosted on PSN servers, like the Official PlayStation Blog, will also be offline during maintenance. The official PlayStation Twitter account, however, will continue to function properly, since it's on Twitter and everything. Updates regarding maintenance can be found there, though extended periods of downtime are usually situations where no news is good news.
http://www.joystiq.com/2012/04/15/ps...orrow-morning/