Sony has provided and update to the maintenance period for PlayStation Network. The service went down yesterday for an upgrade, and was supposed to be back up last night. However, Sony has said to expect the service to remain offline until 9.00pm PST/12.00am EST tonight. Those who signed into the service five days prior to the start of maintenance may be able to play games online and use select apps during the down time. Service downtime to apply an update in Europe is scheduled for Thursday, February 2.