Each update requires you to sit in the spot about 2-3 minutes.
Once you move away you will recieve the update.
There are three spots you need to go to.
Goto the fountain just outside the tower the Muse is in 142.29, 143.44, -28.57 . Just sit next to or on the edge of it.
Go to Pirate's Perch Island in The Sinking Sands. ( -2036, -158, 92,, ) . It's the island directly southeast of the docks. you will need to climb a couple of walls to reach the tree. Once you get there sit under the tree to get the update. NOTE: I suggest killing the few asps around the big palm tree in the middle as they can interrupt you sitting. Also you can only get this update during daylight hours.
Last update is in the Pillars of Flame near the ashen order camp at 348, -154, -1661 . Go to the first island down the wall near the camp entrance. There is a large group of disciples training in front of a very large tree. It is the first island, not the one with the harpies. Sit for update.