[Completed 11:11 AM PDT, 2 April 2013] Today’s rolling restarts have been completed.
[Updated 6:51 AM PDT, 2 April 2013] Rolling restarts for the Main Second Life server channel are in progress.
[Posted 08:05 pm PDT, 1 April 2013] We will be performing rolling restarts for regions on the main Second Life server channel on Tuesday, April 2nd, 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