All servers will come down at 12:01am PST on Tuesday, December 6, 2011 for the Age of Discovery and Game Update 62 patch. Estimated downtime is currently 12 hours; U.S. servers are anticipated to come back online around 12:00pm PST (noon). Due to the volume of data involved, international servers will experience extended downtime. When patch notes are available we will put them on our Game Update 62 page.
In addition, SOE account management and commerce services will be offline for all games during the transition period. Forums may also experience periodic outages. Remember that the EQ2X forums will be locked tomorrow morning at 10:00am PST. All EQ2X forum users should take this time to register anew on the EQII forums; you can start posting there now!
Beginning at 8:00am PST there will be a live webcast, Countdown to the Age of Discovery, on TwitchTV. Various members of the EQII team will be interviewed on the webcast. It is expected to run until 9:45am PST.
A producer's letter from Dave "Smokejumper" Georgeson is also expected tomorrow morning. We'll keep you updated once that is available. In addition, the EverQuest2.com website is being relaunched into its new incarnation and should be available after the downtime. Pre-orders for Age of Discovery will remain open until 11:59pm PST tonight, December 5.
Source: EQII Forums