adding 22.2.9

Author: batamig

articles/defender-for-iot/organizations/release-notes.md

@@ -95,7 +95,7 @@ To understand whether a feature is supported in your sensor version, check the r
 
 ### 22.3.5
 
-**Release date**: 01/2021
+**Release date**: 01/2023
 
 **Supported until**: 12/2023
 
@@ -119,6 +119,14 @@ To update to 22.2.x versions:
 
 For more information, see [Update Defender for IoT OT monitoring software](update-ot-software.md).
 
+### 22.2.9
+
+**Release date**: 01/2023
+
+**Supported until**: 12/2023
+
+This version includes bug fixes for stability improvements.
+
 ### 22.2.8
 
 **Release date**: 11/2022