---
title: Go-SDK - 2.3.0
slug: feature-experimentation/release-notes/go-sdk-2-3-0
docTags: 
createdAt: 2026-07-20T15:44:18.577Z
---

## \[2.3.0]

December 12, 2025

## New Features

[#new-features](docId\:mb07vpk95fz2OhnhJmpu7)

- **Holdout Support**: Added holdouts support with datafile parsing and full decision logic for excluding users from experiments ([#422](https://github.com/optimizely/go-sdk/pull/422))
- **Holdout Impression Events**: Added impression event handling for holdouts with proper `rule_type: "holdout"` metadata ([#428](https://github.com/optimizely/go-sdk/pull/428))
- **Prediction Endpoint Configuration**: Exposed prediction endpoint configuration for advanced use cases ([#427](https://github.com/optimizely/go-sdk/pull/427))

## Bug Fixes

[#bug-fixes](docId\:mb07vpk95fz2OhnhJmpu7)

- **Holdout Decision Metadata**: Fixed `GetDetailedFeatureDecisionUnsafe` to include holdout experiment and variation info in decision results ([#429](https://github.com/optimizely/go-sdk/pull/429))

[https://github.com/optimizely/go-sdk/releases/tag/v2.3.0](https://github.com/optimizely/go-sdk/releases/tag/v2.3.0)