[Completed 9:56am PDT, 30 April 2013] Today’s rolling restarts are now complete.
[Updated 6:45am PDT, 30 April 2013] Rolling restarts for the main Second Life server channel are now in progress.
[Posted 9:49pm PDT, 29 April 2013] We will be performing rolling restarts for regions on the main Second Life server channel on Tuesday, April 30th, 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