[Completed 11:05 AM PST, 26 February 2013] Today’s rolling restarts have been completed.
[Updated 6:51 AM PST, 26 February 2013] We are currently performing rolling restarts on the main Second Life server.
[Posted 8:30 PM PST, 25 February 2013] We will be performing rolling restarts for regions on the main Second Life server channel on Tuesday, February 26, beginning at approximately 5:00AM PST. Please refrain from rezzing no copy objects, making inworld L$ transactions and remember to save all builds.
Source: http://status.secondlifegrid.net