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[AI-FSSDK] [RELEASE] java v4.4.0 #606

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[AI-FSSDK] [RELEASE] java v4.4.0 #606

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[FSSDK-12546] Update CHANGELOG for version 4.4.0
jaeopt Apr 29, 2026
f5590f5
[FSSDK-12546] Update CHANGELOG for java SDK v4.4.0 release
jaeopt Apr 29, 2026
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10 changes: 10 additions & 0 deletions CHANGELOG.md
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# 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. The "everyone else" variation from the flag's rollout is automatically injected into feature_rollout experiments during config parsing ([#601](https://github.com/optimizely/java-sdk/pull/601)). See [Feature Rollout docs](https://docs.developers.optimizely.com/feature-experimentation/docs/run-feature-rollout) for implementation details.

### Bug Fixes & Improvements
- **Holdout Model Cleanup**: Removed deprecated `includedFlags` and `excludedFlags` from Holdout model, simplifying the data structure by treating all holdouts as global ([#604](https://github.com/optimizely/java-sdk/pull/604)). This reduces complexity while maintaining full holdout functionality.
- **Forward Compatibility**: Removed experiment type validation from config parsing to ensure forward compatibility when new experiment types are added in the future. Unknown experiment types are now silently accepted and stored as-is ([#602](https://github.com/optimizely/java-sdk/pull/602)).

## [4.3.1]
Jan 20, 2025

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