---
title: Javascript-SDK - 1.6.0
slug: feature-experimentation/release-notes/javascript-sdk-1-6-0
docTags: 
createdAt: 2026-07-20T15:45:12.674Z
---

\* Bump optimizely-server-sdk to version 1.5.0, which includes:
\- Implemented IP anonymization.
\- Implemented bucketing IDs.
\- Implemented notification listeners.

[https://github.com/optimizely/javascript-sdk/releases/tag/v1.6.0](https://github.com/optimizely/javascript-sdk/releases/tag/v1.6.0)