[Completed 12:05 PM PDT, 26 March 2013] Today’s rolling restarts have been completed.
[Updated 7:03 AM PDT, 26 March 2013] Rolling restarts for the Main Second Life server channel are in progress.
[Posted 7:31 PM PDT, 25 March 2013] We will be performing rolling restarts for regions on the main Second Life server channel on Tuesday, March 26, beginning at approximately 5:00AM PDT. Please refrain from rezzing no copy objects, making inworld L$ transactions and remember to save all builds.
Source: http://status.secondlifegrid.net