[Completed 8:42 am PDT, 7 May 2013] Today’s rolling restarts are now complete.
[Updated 6:41 am PDT, 7 May 2013] Rolling restarts for the main Second Life server channel are now in progress.
[Posted 07:35 pm PDT, 6 May 2013] We will be performing rolling restarts for regions on the main Second Life server channel on Tuesday, May 7th, 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