Prepare core release beta 4 (Azure#44194)

Author: samvaity

sdk/clientcore/core/CHANGELOG.md

@@ -1,14 +1,14 @@
 # Release History
 
-## 1.0.0-beta.4 (Unreleased)
+## 1.0.0-beta.4 (2025-02-13)
 
 ### Features Added
+- Introduced Union Type [#43778](https://github.com/Azure/azure-sdk-for-java/pull/43778)
+- Added support for convenience APIs for generic instrumentation plumbing when no special conventions defined [#44006](https://github.com/Azure/azure-sdk-for-java/pull/44006)
+- Added metrics support and reporting http request duration in instrumentation policy [#43957](https://github.com/Azure/azure-sdk-for-java/pull/43957)
 
 ### Breaking Changes
-
-### Bugs Fixed
-
-### Other Changes
+- Streamline APIs used when creating an HttpPipeline using HttpPipelineBuilder to help guide users through creating a high quality HttpPipeline. [#43504](https://github.com/Azure/azure-sdk-for-java/pull/43504)
 
 ## 1.0.0-beta.3 (2025-01-27)
 

sdk/clientcore/core/README.md

@@ -25,7 +25,7 @@ add the direct dependency to your project as follows.
 <dependency>
     <groupId>io.clientcore</groupId>
     <artifactId>core</artifactId>
-    <version>1.0.0-beta.3</version>
+    <version>1.0.0-beta.4</version>
 </dependency>
 ```
 [//]: # ({x-version-update-end})