---
title: Swift-SDK - 3.8.0
slug: feature-experimentation/release-notes/swift-sdk-3-8-0
docTags: 
createdAt: 2026-07-20T15:44:29.680Z
---

## 3.8.0

June 2, 2021

### New Features

\* Fix to support multiple clients (sdkKeys). (\[#401]\([https://github.com/optimizely/swift-sdk/pull/401](https://github.com/optimizely/swift-sdk/pull/401)), \[#402]\([https://github.com/optimizely/swift-sdk/pull/402](https://github.com/optimizely/swift-sdk/pull/402)), \[#405]\([https://github.com/optimizely/swift-sdk/pull/405](https://github.com/optimizely/swift-sdk/pull/405)), \[#406]\([https://github.com/optimizely/swift-sdk/pull/406](https://github.com/optimizely/swift-sdk/pull/406)), \[#407]\([https://github.com/optimizely/swift-sdk/pull/407](https://github.com/optimizely/swift-sdk/pull/407)), \[#408]\([https://github.com/optimizely/swift-sdk/pull/408](https://github.com/optimizely/swift-sdk/pull/408)), \[#409]\([https://github.com/optimizely/swift-sdk/pull/409](https://github.com/optimizely/swift-sdk/pull/409)), \[#410]\([https://github.com/optimizely/swift-sdk/pull/410](https://github.com/optimizely/swift-sdk/pull/410)))

\- Full thread-safety for additional concurrency requirements
\- No resource conflicts for multiple sdkKeys support

### Bug Fixes

\* BUILD\\\\\_LIBRARY\\\\\_FOR\\\\\_DISTRIBUTION is turned on to support ABI when clients build own binaries and share within the team. (\[#403]\([https://github.com/optimizely/swift-sdk/pull/403](https://github.com/optimizely/swift-sdk/pull/403)))

[https://github.com/optimizely/swift-sdk/releases/tag/v3.8.0](https://github.com/optimizely/swift-sdk/releases/tag/v3.8.0)