[RESOLVED 10:00am PDT 11 June 2013] Today’s rolling restarts are now complete.
[UPDATED 6:55am PDT, 11 June 2013] Rolling restarts for the main Second Life server are in progress.
[Posted 08:16 pm PDT, 10 June 2013] We will be performing rolling restarts for regions on the main Second Life server channel on Tuesday, June 11, 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