[FSSDK-12546] Prepare for release java-sdk v4.4.0

Author: jaeopt

CHANGELOG.md

@@ -1,5 +1,16 @@
 # Optimizely Java X SDK Changelog
 
+## [4.4.0]
+Apr 29, 2026
+
+### New Features
+
+**Feature Rollout**: Introduced Feature Rollout capabilities. Feature Rollouts represent a new experiment type merging Targeted Delivery simplicity with A/B test measurement capabilities. See [Feature Rollout docs](https://docs.developers.optimizely.com/feature-experimentation/docs/cmab-cache-config-for-the-java-sdk ) for implementation details.
+- Add Feature Rollout support ([#601](https://github.com/optimizely/java-sdk/pull/601)).
+- Remove experiment type validation from config parsing ([#602](https://github.com/optimizely/java-sdk/pull/602)).
+- Remove legacy flag-level holdout fields ([#604](https://github.com/optimizely/java-sdk/pull/604)).
+- Parse holdout section and update project config ([#572](https://github.com/optimizely/java-sdk/pull/572)).
+
 ## [4.3.1]
 Jan 20, 2025
 

gradle.properties

@@ -1,5 +1,5 @@
 # Maven version
-version = 3.1.0-SNAPSHOT
+version = 4.4.0
 
 # Artifact paths
 mavenS3Bucket = optimizely-maven