(DOCSP-25216) Charts 1.33.1 release notes (#556)

* (DOCSP-25216) Charts 1.33.1 release notes

Author: zach-carr

source/release-notes.txt

@@ -1,6 +1,6 @@
-==================================
-MongoDB Charts Cloud Release Notes
-==================================
+============================
+MongoDB Charts Release Notes
+============================
 
 .. default-domain:: mongodb
 
@@ -10,6 +10,40 @@ MongoDB Charts Cloud Release Notes
    :depth: 1
    :class: twocols
 
+|charts| v1.33.1
+----------------
+
+*Released September 12, 2022*
+
+Improvements in this release:
+
+- You can now use {+serverless-instances+} as 
+  :ref:`data sources <data-sources>`.
+
+- Improved data source integration in |charts|:
+
+  - |service| collections are automatically available to use in the 
+    chart builder. If you don't want a data source to be available, you 
+    can :ref:`disconnect it <connect-disconnect-data-source>`.
+
+  - Updated the :ref:`data-sources` page.
+
+  - You can now create and test pipelines when building |charts-short| 
+    views.
+
+  - You can now click your data source collection name in the chart 
+    builder to see a sample list of fields in that collection.
+
+- You can now programmatically highlight charts inside an embedded 
+  dashboard using the :ref:`embedding-charts-sdk`.
+
+- Adds support for the ``$searchMeta`` and ``$unionWith`` aggregation 
+  pipeline stages.
+
+- Removes support for assigning individual users to the 
+  ``Viewer`` role. 
+  This does not affect users already using this feature.
+
 |charts| v1.32.1
 ----------------