The Estate of Unrest zone went live with Live Update 32 as a free content addition to Echoes of Faydwer, and became the second Persistent Instance with LU38. Unlike most zones where quests exist in the zone, this zone IS the quest, after a fashion. It is like an old Zork or Myst game, where various items related to the storyline lead you through unlocking the path until you reach the final encounter.
Location at ( -204, 177, 1088 ) /waypoint -204, 177, 1088
For a detailed guide to the zone, please see here. A page with Lore information is also available.