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# ZED SDK 4.x

| Release                                                        | Patch releases                                                               | Release dates              |
| -------------------------------------------------------------- | ---------------------------------------------------------------------------- | -------------------------- |
| [ZED SDK 4.2](/docs/development/zed-sdk/release-notes/4-x/4-2) | 4.2.5, 4.2.4, 4.2.3, 4.2.2, 4.2.1, 4.2.0                                     | Sep 30, 2024 – Feb 4, 2025 |
| [ZED SDK 4.1](/docs/development/zed-sdk/release-notes/4-x/4-1) | 4.1.4, 4.1.3, 4.1.2, 4.1.1, 4.1.0                                            | Apr 3, 2024 – Sep 10, 2024 |
| [ZED SDK 4.0](/docs/development/zed-sdk/release-notes/4-x/4-0) | 4.0.8, 4.0.7, 4.0.6, 4.0.5, 4.0.4, 4.0.3, 4.0.2, 4.0.1, 4.0.0 (Early Access) | N/A                        |

> Release notes of the ZED SDK 4.x releases

## Docs

- [ZED SDK 4.2](https://docs.stereolabs.com/docs/development/zed-sdk/release-notes/4-x/4-2.md): Release notes of the ZED SDK 4.2.x series
- [ZED SDK 4.1](https://docs.stereolabs.com/docs/development/zed-sdk/release-notes/4-x/4-1.md): Release notes of the ZED SDK 4.1.x series
- [ZED SDK 4.0](https://docs.stereolabs.com/docs/development/zed-sdk/release-notes/4-x/4-0.md): Release notes of the ZED SDK 4.0.x series