[Resolved 9:58 AM PST, 21 January 2014] The rolling restarts for the main Second Life server channel are now complete.
[Posted 7:00 AM PST, 21 January 2014] The rolling restarts for the main Second Life server channel are now in progress.
[Posted 11:10 PM PST, 20 January 2014] We will be performing rolling restarts for regions on the main Second Life server channel on Tuesday, January 21st, beginning at approximately 5:00AM PST. Please refrain from rezzing no copy objects, making inworld L$ transactions and remember to save all builds.
Source: http://status.secondlifegrid.net