The Trion Worlds team has announced that due to issues deploying the ArcheAge expansion, Revelation, North American servers are offline and will hopefully be back up by 12 pm Pacific / 3 pm Eastern if all goes according to plan. The EU release of Revelation seems to have been successfully deployed.
All NA servers are now down for the night. We have Techs working with XL and hope to have them back online by noon PST tomorrow, possibly starting as early as 10:00 AM PST. ~Brasse
The North American community is relatively unhappy but Trion is working to get Revelation expansion online as quickly as possible.
You can keep track of the conversation and updates on the ArcheAge forum.