---
title: Go-SDK - 1.0.0-beta1
slug: feature-experimentation/release-notes/go-sdk-1-0-0-beta1
docTags: 
createdAt: 2026-07-20T15:45:11.046Z
---

\## \[1.0.0-beta1] - September 27th, 2019

\### New Features
\- Added decision listeners and project config update listeners.
\- Added optional configuration parameters to NewProcessor.

\### Breaking Changes
\- This method \`OptimizelyFactory.ClientWithOptions()\` has been removed in favor of \`OptimizelyFactory.Client(clientOptions ...OptionFunc)\`

[https://github.com/optimizely/go-sdk/releases/tag/v1.0.0-beta1](https://github.com/optimizely/go-sdk/releases/tag/v1.0.0-beta1)