[RESOLVED 9:02 AM PDT, 23 July 2013] Rolling restarts for the main Second Life server channel are now complete.
[UPDATED 6:48 AM PDT, 23 July 2013] Rolling restarts for the main Second Life server channel are now in progress.
[Posted 09:17 pm PDT, 22 July 2013] We will be performing rolling restarts for regions on the main Second Life server channel on Tuesday, July 23, 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