There will be a test migration of the servers today, January 3rd 2013. Some downtime may occur as a result of this. More information about the future live migration will be given after results of the test are known.
EDIT: Test migration completed successfully. Update on estimated time/downtime for the forum for the live migration will be forthcoming. One optimization is needed to occur which will be server intensive. This will happen tonight at midnight ET (9PM PT). During this time the server may respond slowly.
EDIT: Test migration completed successfully. Update on estimated time/downtime for the forum for the live migration will be forthcoming. One optimization is needed to occur which will be server intensive. This will happen tonight at midnight ET (9PM PT). During this time the server may respond slowly.