Simplicity SDK Version 2025.6.2 (September 24, 2025) - Release Notes#
The primary tool for the Silicon Labs IoT software development ecosystem, combining wireless software development kits (SDKs) and platform into a single, integrated package.
Click here for earlier releases on GitHub.
Looking for older release notes? You can still access previous versions for both Simplicity SDK (prior to 2025.6.0) and Gecko SDK here.
Release Summary#
| Release Item | Version | Release Date |
|---|---|---|
Platform |
5.2.2 |
September 24, 2025 |
RAIL Library |
2.19.2 |
September 24, 2025 |
RAIL SDK |
2.19.2 |
September 24, 2025 |
USB |
1.5.1 |
July 21, 2025 |
Wi-Fi 6 + BLE (WiSeConnect 3) |
3.5.2 |
September 29, 2025 |
OpenThread |
2.7.2 |
September 24, 2025 |
Zigbee |
8.2 Revision 2 |
September 24, 2025 |
Bluetooth LE |
10.1.1 |
September 24, 2025 |
Bluetooth Mesh |
9.0.2 |
September 24, 2025 |
Bluetooth Location Services |
10.0.2 |
September 24, 2025 |
Z-Wave |
7.24.2 |
September 24, 2025 |
Wi-SUN |
2.8.0 |
September 24, 2025 |
Silicon Labs Matter |
2.7.0-1.4 |
September 29, 2025 |
Amazon Sidewalk |
2.6.0 |
Coming soon. Refer to the note below this text. |
Connect |
4.1.2 |
September 24, 2025 |
Machine Learning |
2.1.2 |
September 29, 2025 |
Simplicity Studio |
5.11.2 |
September 24, 2025 |
Simplicity Connect Mobile App |
3.1.2 |
September 24, 2025 |
Note to users of these SDKs
Amazon Sidewalk
Do not upgrade to the latest Simplicity SDK as it will uninstall the above SDKs.
Alternatively, choose the option to install it as an additional copy. Stay tuned for upcoming release announcements for the above SDKs.