[RESOLVED 12:03 PM PDT, 16 July 2013] We have completed the rolling restarts for the main Second Life Server channel at this time.
[UPDATED 6:43 AM PDT, 16 July 2013] Rolling restarts for the main Second Life Server channel are now in progress.
[Posted 10:17 pm PDT, 15 July 2013] We will be performing rolling restarts for regions on the main Second Life server channel on Tuesday, July 16, 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