Release note for .net fm 4.2.1 (#1074)

zhiyuanliang-ms · web-flow · commit 584e0ed08cb0 · 2025-07-11T01:03:12.000+08:00
* release note for .net fm 4.2.0

* update

* update date

* update
diff --git a/releaseNotes/Microsoft.Featuremanagement.AspNetCore.md b/releaseNotes/Microsoft.Featuremanagement.AspNetCore.md
@@ -2,6 +2,10 @@
 
 [Source code][source_code] | [Package (NuGet)][package] | [Samples][samples] | [Product documentation][docs]
 
+## 4.2.1 - July 9, 2025
+
+* Updated `Microsoft.FeatureManagement` reference to `4.2.1`. See the [release notes](./Microsoft.Featuremanagement.md) for more information on the changes.
+
 ## 4.1.0 - May 22, 2025
 
 ### Enhancements
diff --git a/releaseNotes/Microsoft.Featuremanagement.Telemetry.ApplicationInsights.md b/releaseNotes/Microsoft.Featuremanagement.Telemetry.ApplicationInsights.md
@@ -2,6 +2,10 @@
 
 [Source code][source_code] | [Package (NuGet)][package] | [Samples][samples] | [Product documentation][docs]
 
+## 4.2.1 - July 9, 2025
+
+* Updated `Microsoft.FeatureManagement` reference to `4.2.1`. See the [release notes](./Microsoft.Featuremanagement.md) for more information on the changes.
+
 ## 4.1.0 - May 22, 2025
 
 ### Enhancements
diff --git a/releaseNotes/Microsoft.Featuremanagement.md b/releaseNotes/Microsoft.Featuremanagement.md
@@ -2,6 +2,12 @@
 
 [Source code][source_code] | [Package (NuGet)][package] | [Samples][samples] | [Product documentation][docs]
 
+## 4.2.1 - July 9, 2025
+
+### Enhancements
+
+* Added support for aggregating feature flags from multiple configuration providers. When the same feature flag is defined in multiple sources, definitions are merged according to configuration provider registration order, with the last feature flag definition taking precedence in case of conflicts. [#536](https://github.com/microsoft/FeatureManagement-Dotnet/pull/536)
+
 ## 4.1.0 - May 22, 2025
 
 ### Enhancements
