Pmm 12766 - Adds Rel notes for newMongoDb dashboards (#3163)

* draft

* draft

* draft

* draft

* formatting

* formatting

* changed structure

* oplog and collection details dashboards GA

* added SS

* fixed SS

* feedback from Roma

* formatting

* added link

* Added Rel Summary

* replaced jpg

* deleted jpg

docs/release-notes/2.43.0.md

@@ -10,9 +10,49 @@ It enables you to observe the health of your database systems, explore new patte
 
 ## What's new in this release
 
-This release introduces this and that
+PMM 2.43 brings a host of updates, including redesigned dashboards, new collectors and metrics, enhanced troubleshooting capabilities, strengthened security, and expanded platform support with official ARM compatibility for PMM Client.
 
-## Release highlights
+Additionally, it features many bug fixes and performance enhancements to improve your user experience.
+
+### MongoDB dashboard improvements and GA of recent experimental dashboard
+
+This update introduces significant enhancements to MongoDB monitoring, focusing on redesigned dashboards, streamlined navigation, and general availability of previously experimental dashboards.
+
+#### Redesigned dashboards
+
+We've overhauled two critical MongoDB dashboards to provide more value, especially for complex, multi-environment setups:
+
+- **Replica Set Summary**
+- **Sharded Cluster Summary** (formerly Cluster Summary)
+
+These dashboards now offer enhanced usability, improved insights, and optimized visualizations for complex environments. They focus on highlighting potential database issues for faster resolution and provide centralized, actionable insights without clutter.
+
+#### General availability of Experimental dashboards
+
+The redesigned dashboards, along with the following previously experimental dashboards, are now generally available:
+
+- **MongoDB Oplog Details**
+- **MongoDB Collection Overview**
+- **Replica Set Summary**
+- **Sharded Cluster Summary** (formerly Cluster Summary)
+
+#### Accessing the new dashboards
+
+The updated dashboards are in the **MongoDB** and **Dashboards** sections of the main menu. They replace the previous versions as the default dashboards for MongoDB monitoring.
+
+The old dashboards have been moved to the **Experimental** folder and renamed with **(Old)** appended to their names. Future releases will remove these older versions.
+
+#### Updated MongoDB menu structure
+
+To complement the dashboard improvements, we've also restructured the MongoDB section on the main menu for better navigation and accessibility:
+
+- Reorganized menu for a more intuitive navigation, prioritizing the three updated GA dashboards above.
+- Decluttered view by moving older dashboards to the **Experimental** folder or removing them from the menu.
+- Added **MongoDB Oplog Details**, **MongoDB Collection Overview**, and **MongoDB Instance Summary** to the main menu
+
+![New MongoDB menu structure](../images/new_Mongo_menu.png)
+
+We encourage you to start using the new dashboards to benefit from their enhanced monitoring capabilities. We also invite you to share your feedback in the [PMM forum](https://forums.percona.com/c/percona-monitoring-and-management-pmm/percona-monitoring-and-management-pmm-v2/31).
 
 ### Repository changes for PMM: Transition to dedicated `pmm2-client` repository
 
@@ -71,8 +111,6 @@ Specifying a limit with `--max-collections` for this collector is not necessary.
 
 For more information on MongoDB collectors and metrics, see the [pmm-admin commands documentation](../use/commamds/pmm-admin.md).
 
-
-
 ## Improvements
 
 - [PMM-13133](https://perconadev.atlassian.net/browse/PMM-13133) -