This downtime is separate from the Daybreak General Maintenance also occuring on Tuesday.

US servers will be brought offline on Tuesday, August 11, 2015 at 7am PT for an update. EU servers will come down at 9pm PT (5am London Time on August 12th) for their update. Estimated downtime for both sets of servers is approximately one hour. Here are the patch notes:

GENERAL

• Addressed an issue causing some client performance issues.
• Fixed an issue where consumables could give incorrect bonuses after zoning.
• Added total kills and KvD to census data for characters.

POPULATION / ZONE PROGRESSION
PvP General

• The payments made by the exiles to buy off non-city guards have expired. Non-city guards will no longer assist exiles in PvP combat.
• Ravens' Roost has hired a few high level guards.

Ssrez'Ras: Chamber of Stasis [Heroic]

• Deviator Yothsra can once again be slain.

ABILITIES / ALTERNATE ADVANCEMENT
PvP

• Summoner pets will no longer apply state effects in PvP combat.

ITEMS

• Woven Rawhide armor has had its tint corrected.