Spotted on the Network Status Page :

Downtime schedule - 09/03/20087:00AM Pacific Daylight Time

All EQII US worlds will be updated at 7:00 AM Pacific Daylight Time on 09/03/2008.
The estimated downtime will be 1 hour.

- SOE Operations team

Downtime scheduled - Downtime scheduled 09/04/2008 5:00 AM London Time / 09/03/2008 9:00 PM Pacific Daylight Time

This is a notification that UK worlds will be updated at 5:00 AM London Time on the 09/04/2008. The estimated downtime will be 2 hours.

- SOE Operations team

For your reading pleasure during downtime, we present to you the revamped Everfrost , the Guild Hall Construction World Event , and chapter three of the Void Storms world Event, a murder mystery !

note:  none of those links contain spoilers, you'll have to click through one more time!