Merge branch 'main' into PMM-7-run-pmm-client-for-api-tests

docs/release-notes/2.43.0.md

@@ -183,6 +183,9 @@ If you're looking to upgrade, you can easily [install the latest version of Perc
 
 - [PMM-13292](https://perconadev.atlassian.net/browse/PMM-13292) - Introduced an improved mechanism to resolve port conflicts when starting multiple PMM agents on the same machine, enhancing reliability and reducing manual intervention in complex monitoring setups.
 
+- [PMM-13141](https://perconadev.atlassian.net/browse/PMM-13141) - Introduced new MongoDB metrics for Feature Compatibility Version (FCV),  enhancing monitoring capabilities for multi-version deployments.
+This metric, collected automatically via the MongoDB exporter, provides insights into individual node compatibility and supports upcoming PMM advisors. 
+
 
 ### Fixed issues
 
@@ -212,4 +215,4 @@ To ensure you're using the updated alert logic, make sure to recreate any alerts
 
 - [PMM-12451](https://perconadev.atlassian.net/browse/PMM-12451) and [PMM-13017](https://perconadev.atlassian.net/browse/PMM-13017) - Resolved an issue with parsing JSON objects into the correct data types and aligned the explain functionality with the official MongoDB client. These updates enhance consistency with MongoDB's native tools and provide improved performance insights.
 
-- [PMM-13071](https://perconadev.atlassian.net/browse/PMM-13071) - The **Explain** tab on the Query Analytics (QAN) page now properly handles unsupported MongoDB query types. For operations like `INSERT`, which don’t support explain functionality, you will now see a clear message saying that the operation is not explainable. This replaces the previous, confusing error message about duplicate BSON fields, offering more accurate feedback in QAN.
+- [PMM-13071](https://perconadev.atlassian.net/browse/PMM-13071) - The **Explain** tab on the Query Analytics (QAN) page now properly handles unsupported MongoDB query types. For operations like `INSERT`, which don’t support explain functionality, you will now see a clear message saying that the operation is not explainable. This replaces the previous, confusing error message about duplicate BSON fields, offering more accurate feedback in QAN.