Resfelm:

We would like to inform you that the siege patch will be going live tomorrow, Thursday, so expect an extended maintenance time. In addition, there will be a small server side patch today that will block any attempts to initiate sieges until the siege patch is deployed. Any already active sieges will not be affected but you will not be able to initiate new ones. This is so that when the servers go down for maintenance tomorrow there will be no active sieges. This will eliminate any issues that could be caused to active sieges while transitioning from the old system to the new one.

Complete patch notes with all the specifics will be posted tomorrow.