diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a030bf8322b..4d1ebdfe7019 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 ## 1.12.0 (Unreleased)
 
+UPGRADE NOTES:
+
+* **Please Note:** When upgrading to v1.12.0 of the Azure Provider, you may need to specify the `priority` of any VM Scale Sets created between v1.6 of the Provider and v1.12. [GH-1586]
+
 FEATURES:
 
 * **New Data Source:** `azurerm_container_registry` [GH-1642]
@@ -15,6 +19,11 @@ IMPROVEMENTS:
 * `azurerm_role_assignment` - retrying resource creation to match the Azure CLI's behaviour [GH-1647]
 * `azurerm_virtual_machine` - setting the connection information for Provisioners [GH-1646]
 
+
+BUG FIXES:
+
+* `azurerm_virtual_machine_scale_set` - removing the default of `priority`, since this isn't set on older instances. [GH-1586]
+
 ## 1.11.0 (July 25, 2018)
 
 FEATURES: