---
title: Swift-SDK - 5.0.0
slug: feature-experimentation/release-notes/swift-sdk-5-0-0
docTags: 
createdAt: 2026-07-20T15:44:30.634Z
---

## 5.0.0

[#500](docId:7XbOW5RAyplZXqVdJF27M)

November 25th, 2024

### Breaking Changes

[#breaking-changes](docId:7XbOW5RAyplZXqVdJF27M)

- VUID configuration is now independent of ODP ([#456](https://github.com/optimizely/swift-sdk/pull/556))
- When VUID is disabled:
  - `vuid` is not generated or saved.
  - `client-initialized` event will not auto fired on SDK init.
  - `vuid` is not included in the odp events as a default attribute.
  - `createUserContext()` will be rejected if `userId` is not provided.

[https://github.com/optimizely/swift-sdk/releases/tag/v5.0.0](https://github.com/optimizely/swift-sdk/releases/tag/v5.0.0)