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[FSSDK-12166] changelog update for minor release of holdouts #453

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Mat001 merged 2 commits into from
Dec 19, 2025
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[FSSDK-12166] changelog update for minor release of holdouts #453

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5b1deb2
changelog update for minor release of holdouts
Mat001 Dec 18, 2025
27ffe93
update changelog - remove local HO support line
Mat001 Dec 18, 2025
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28 changes: 28 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -6,6 +6,34 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.

## [Unreleased]

## [4.4.0] - December 18, 2025

This release adds support for Holdouts, allowing you to measure the incremental impact of feature flags and experiments by holding back a percentage of users from seeing any changes.

### New Features

* **Holdouts Support** ([#452](https://github.com/optimizely/agent/pull/452)): Agent now fully supports Optimizely's Holdouts feature for measuring incremental impact of flags and experiments. Features include:
- Full holdouts evaluation through go-sdk v2.3.0
- Support for global (project-level) holdouts
- Holdouts evaluated before experiments and rollouts in decision flow
- Holdout decisions return `enabled: false`, `variationKey: "off"`, and `ruleKey` containing the holdout identifier
- Forced decisions correctly override holdout bucketing
- Zero Agent code changes required - all holdout logic handled by go-sdk
- Comprehensive acceptance test coverage with real project datafile

This enables accurate measurement of feature impact by comparing users held out from experiments against those receiving variations.

* **CMAB Acceptance Tests** ([#451](https://github.com/optimizely/agent/pull/451)): Added comprehensive acceptance tests for Contextual Multi-Armed Bandit (CMAB) functionality to ensure reliable AI-powered experimentation

### Changed

* Updated to go-sdk v2.3.0 with holdouts support and CMAB improvements
* Updated CMAB API migration to use `CmabConfig.PredictionEndpointTemplate` field

### Fixed

* Fixed Prisma security scanning issues ([#450](https://github.com/optimizely/agent/pull/450))

## [4.3.0] - November 20, 2025

This release introduces production-ready support for Contextual Multi-Armed Bandit (CMAB), enabling AI-powered experimentation that learns and adapts in real-time based on user context.
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