## [0.2.0] - September 11th, 2019
This release of the SDK introduces Feature Management capabilities for running both Feature Rollouts as well as Feature Tests using Optimizely Feature Management.

### New Features
- Introduces feature variable getters via `GetFeatureVariable*` for parameterizing your feature tests.
- Introduces the `Track` API call for sending conversion events to Optimizely.
- The `IsFeatureEnabled` API will now send impression events if there is a feature test attached to the feature being accessed.

### Breaking Changes
- Vendored packages have been removed in favor of declaring dependencies and their versions using `go.mod`.

Go-SDK - 1.0.0-beta1

Go-SDK - v0.2.0

ai_cta

ai_identity

ai_chat

ai_product


Data set that refers to a person or a role and contains at least one address via which the person or role can receive messages.

recipient

Go-SDK - 0.1.0

feature-experimentation-release-notes

Release Notes for Feature Experimentation

2026 Optimizely Feature Experimentation release notes

2025 Optimizely Feature Experimentation release notes

2024 Optimizely Feature Experimentation release notes

2023 Optimizely Feature Experimentation release notes

2022 Optimizely Feature Experimentation release notes

Agent

Android SDK

C# SDK

Flutter SDK

Go SDK

Java SDK

JavaScript SDK

PHP SDK

Python SDK

React SDK

Ruby SDK

Swift SDK

Feature Experimentation SDK release notes

Release notes

Feature Experimentation API changelog – 2025