Bluetooth LE Version 11.0.0 - Release Notes (Jan 22, 2026)#

Simplicity SDK Version 2025.12.0

Silicon Labs is a leading vendor in Bluetooth hardware and software technologies, used in products such as sports and fitness, consumer electronics, beacons, and smart home applications. The core SDK is an advanced Bluetooth 6.1-compliant stack that provides all of the core functionality along with multiple API to simplify development. The core functionality offers both standalone mode, allowing a developer to create and run their application directly on the SoC, or NCP mode, allowing for the use of an external host MCU.

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Release Summary#

Release Item	Version	Release Date	Release Notes	Key Features	API Changes	Bug Fixes	Chip Enablement
Example and Middleware	11.0.0	Jan 22, 2026	Release Notes	Host examples shown on Studio Launcher page. Most bootloader-aware example applications converted to standalone to simplify early development.	None	Various Electronic Shelf Label (ESL) related bug fixes. Various Channel Sounding (CS) related bug fixes Various generic bug fixes Various Channel Sounding (CS) related bug fixes. Various generic bug fixes.	Added xGM270S SiP module support.
Host Stack	11.0.0	Jan 22, 2026	Release Notes	Bluetooth host qualification for Core specification 6.1. PAwR event counter reporting. Channel classification reporting for a remote peripheral device. Support for larger BGAPI payload size in NCP applications.	New APIs for PAwR event counter reporting and channel classification reporting. API function declaration fix for removing compile warnings. Removal of deprecated APIs.	Improved L2CAP and ATT packet validation and error handling.	N/A
Controller	11.0.0	Jan 22, 2026	Release Notes	PAwR event counter reporting. Support for HCI_LE_Set_Resolvable_Private_Address_Timeout (v2).	None	None	N/A
802.15.4 Mesh + BLE Multiprotocol	11.0.0	Jan 22, 2026	Release Notes	Concurrent Listening support with CMP on SiMG301x. Bi-directional Green Power support with CMP Zigbee NCP + OpenThread RCP.	None	Targeted quality improvements and bug fixes.	xGM270S Leopard SiP Module GA SW support. xG301 Explorer Kit and Pro-kit support.

Impact of Release Changes#

Impact Statements | Migration Guide

Impact Statements#

None.

Using This Release#

What's in the Release? | Compatible Software | Installation and Use | Help and Feedback

What's in the Release?#

Compatible Software#

Software	Compatible Version or Variant
Simplicity SDK	2025.12.0
Simplicity Studio	Any version that is compatible to Simplicity SDK 2025.12
Simplicity Commander	provided with Simplicity Studio
GCC (The GNU Compiler Collection)	12.2.1 (provided with Simplicity Studio)
IAR Embedded Workbench for ARM (IAR-EWARM)	9.40.1

Installation and Use#

To run your first demo, see our Getting Started Guides.

To kick start your development, see our Developer's Guide.

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Select Notifications from the dropdown menu.
In the Notifications section, go to the My Product Notifications tab to review historical Security and Software Advisory notifications
To manage your preferences, use the Manage Notifications tab to customize which product updates and advisories you receive.

To learn more about the software in this release, dive into our online documentation.

Help and Feedback#

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SDK Release and Maintenance Policy#

See our SDK Release and Maintenance Policy.