---
title: Go-SDK - 1.0.0
slug: feature-experimentation/release-notes/go-sdk-1-0-0
docTags: 
createdAt: 2026-07-20T15:45:09.814Z
---

\## \[1.0.0] - January 9th, 2020
This is the General Availability release of the Go SDK.

\## New Features
\- feat(onTrack): Added onTrack callback. \[#198]\([https://github.com/optimizely/go-sdk/pull/198](https://github.com/optimizely/go-sdk/pull/198))
\- feat: Add observability metrics for event queue. \[#211]\([https://github.com/optimizely/go-sdk/pull/211](https://github.com/optimizely/go-sdk/pull/211))
\- feat: Implement OptimizelyConfig API. \[#216]\([https://github.com/optimizely/go-sdk/pull/216](https://github.com/optimizely/go-sdk/pull/216))
\- feat: Add observability metrics for event queue. \[#223]\([https://github.com/optimizely/go-sdk/pull/223](https://github.com/optimizely/go-sdk/pull/223))

\## Bug Fixes
\- fix: Revert signature changes to PollingProjectConfigManager. \[#209]\([https://github.com/optimizely/go-sdk/pull/209](https://github.com/optimizely/go-sdk/pull/209))
\- fix(notification): race detected send notification issue. \[#222]\([https://github.com/optimizely/go-sdk/pull/222](https://github.com/optimizely/go-sdk/pull/222))

\## Breaking Changes
\- refac: Execution context. \[#212]\([https://github.com/optimizely/go-sdk/pull/212](https://github.com/optimizely/go-sdk/pull/212))
\- refac(config): Move config interfaces back into config package. \[#213]\([https://github.com/optimizely/go-sdk/pull/213](https://github.com/optimizely/go-sdk/pull/213))

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