DOCSP-29620 BACKPORT (#3207)

Author: Dave Cuthbert

source/release-notes/4.4.txt

@@ -32,6 +32,10 @@ Release Notes for MongoDB 4.4
       * - :issue:`WT-10461` 
         - 4.4.0 - 4.4.18 (ARM64 or POWER system architectures)
 
+      * - :issue:`WT-10551` 
+        - 4.4.8 - 4.4.21 (Incremental backups on Ops Manager or Cloud
+          Manager clusters)
+
       * - :issue:`SERVER-58936`
         - 4.4.7