[DLSPS] Updated Release Notes for DLSPS 2025.2.0 Release (#1496)

Author: jmotow

microservices/dlstreamer-pipeline-server/RELEASE_NOTES.md

@@ -1,8 +1,32 @@
 # Release Notes
 
-# August 2025
 
-## v3.1.0
+# December 2025
+
+## Version: 2025.2.0
+
+### Added
+- `souphttpsrc` element in docker file.
+
+### Fixed
+- Wrong formatting in compose file
+- Added missing eis_mqtt_publish_doc.md documentation
+- Fixed WebRTC GPU pipeline functionality for Xeon+dGPU hardware combinations
+- Updated Helm chart version in documentation and dockerhub to be in sync with current one.
+- Resolved issue where videoconvert was dropping tensor data provided by gvametaconvert
+- Updated [Helm chart](https://hub.docker.com/layers/intel/dlstreamer-pipeline-server/2025.2.0/images/sha256-c878cc4d3606ebe242611b8ba7ffd551726c95a806e6bc415965d3f0f15a5a8f) on Dockerhub
+- Incorrect communication between containers has been fixed by configuring properenv variables.
+- RSTP connection error recovery mechanism
+
+
+### Updates
+- DL Streamer updated to 2025.2.0
+ 
+
+---
+
+
+## v3.1.0 (August 2025)
 
 ### Added
 - Support for Ubuntu22 and Ubuntu24 based docker images