Another update, and none of it good.
PC Post-Patch Amulets that I have found:
1) Cassandra's amulet in Fallow Mire
2) Varric and Ironbull amulets from war missions
3) Solas amulet from elf quest in Hinterlands
4) Cole amulet from 'Burden of Command' in Crestwood
5) Blackwall's amulet in Adamant
6) Sera's amulet from red jenny war mission
PC Post-Patch Missing Amulets:
1) Varric's in Valammar
2) Inquisitor behind final frost door in Forbidden Oasis
3) Dorian's amulet in still ruins
4) Dorian's amulet from Marcius of Griffon Wing Keep in Western Approach
5) Inquisitor amulet in fade with the broken mirror
6) Iron bull's amulet from Northern Hunter in Crestwood
7) Vivienne's amulet in Winter Palace (NEW)
*EDIT*
I created a nice color-coded table but can't seem to paste it here. I went through ALL the amulets and took in the reports from this thread, and the summary looks like this (so far)
Missing + Reported Missing = 14
Found + Expected to be found = 16
4 Unknown
Not every amulet can be found in a single play through. Some require certain choices to be made, or which path taken. Expected amulets are from war missions that I have not done yet. Of interest for the inquisitor, depending on choices, you may only have access to two amulets of power. Three is the most you can have now, and that assumes you make certain choices in the Winter Palace and a war mission reward is successful. Many companions can expect only have 1 amulet of power now: Dorian, Blackwall, Cole, Sera, and Solas. Vivienne, Varric, and Cassandra may have two, but Cassandra's depends on choices made with templars vs mages.
Basically, about half were removed.