---
title: Go-SDK - 1.3.0
slug: feature-experimentation/release-notes/go-sdk-1-3-0
docTags: 
createdAt: 2026-07-20T15:45:10.754Z
---

## \[1.3.0] - July 7th, 2020

### New Features

\- Add support for JSON feature variables (\[#250]\([https://github.com/optimizely/go-sdk/pull/250](https://github.com/optimizely/go-sdk/pull/250)), \[#251]\([https://github.com/optimizely/go-sdk/pull/251](https://github.com/optimizely/go-sdk/pull/251)), \[#253]\([https://github.com/optimizely/go-sdk/pull/253](https://github.com/optimizely/go-sdk/pull/253)))
\- Add support for authenticated datafiles (\[#267]\([https://github.com/optimizely/go-sdk/pull/267](https://github.com/optimizely/go-sdk/pull/267)))
\- Expose ability to customize URL for event dispatcher. (\[#268]\([https://github.com/optimizely/go-sdk/pull/268](https://github.com/optimizely/go-sdk/pull/268)))

### Bug Fix

\- Provide synchronization for Notification Center Cache (\[#273]\([https://github.com/optimizely/go-sdk/pull/273](https://github.com/optimizely/go-sdk/pull/273)))
\- Fix unbounded memory allocation in event dispatcher (\[#275]\([https://github.com/optimizely/go-sdk/pull/275](https://github.com/optimizely/go-sdk/pull/275)))

[https://github.com/optimizely/go-sdk/releases/tag/v1.3.0](https://github.com/optimizely/go-sdk/releases/tag/v1.3.0)