OpenThread - 802.15.4 Mesh + BLE Multiprotocol Version 3.0.0 - Release Notes (Jan 22, 2026)#

OpenThread Version 3.0.0

Simplicity SDK Version 2025.12.0

This document provides release information for the 802.15.4 Mesh + BLE Multiprotocol SDK.

Click here for earlier releases.

Release Summary#

Key Features | API Changes | Bug Fixes | Chip Enablement

Key Features#

  • Concurrent Listening support with CMP on SiMG301x.

  • Bi-directional Green Power support with CMP Zigbee NCP + OpenThread RCP.

API Changes#

None.

Bug Fixes#

Targeted quality improvements and bug fixes.

Chip Enablement#

  • xGM270S Leopard SiP Module GA SW support.

  • xG301 Explorer Kit and Pro-kit support.

Key Features#

New Features | Enhancements | Removed Features | Deprecated Features

New Features#

Bi-directional Green Power support with CMP Zigbee NCP + OpenThread RCP#

Added bi-directional Green Power support with CMP Zigbee NCP + OT RCP configuration, enabling Green Power Proxy functionality in NCP-RCP multiprotocol applications.

Enhancements#

None.

Removed Features#

None.

Deprecated Features#

None.

API Changes#

New APIs | Modified APIs | Removed APIs | Deprecated APIs

New APIs#

None.

Modified APIs#

None.

Removed APIs#

None.

Deprecated APIs#

Deprecated API Name

Planned Removal Date

sl_802154_radio_set_scheduler_priorities

2026 Q1

Bug Fixes#

ID Issue Description GitHub / Salesforce Reference (if any) Affected Software Variants, Hardware, Modes, Host Interfaces
1471746 Fixed an issue where the Zigbee + Bluetooth NCP application examples did not appear in Studio. N/A Zigbee + Bluetooth NCP app
1524505 Fixed an issue that could pass an invalid mac layer packet to cause an assert. N/A All OPNs, boards, modes and interfaces
1568095 Changed default SL_BT_CONTROLLER_BUFFER_MEMORY value for OpenThread NCP + BLE RCP application to work on parts with 96kB RAM. N/A OpenThread NCP + BLE RCP app

Chip Enablement#

  • xGM270S Leopard SiP Module: Added GA software support for xGM270S Leopard SiP Module.

  • xG301 Explorer Kit and Pro-kit Support: Added support for Explorer Kit and Pro-kit boards for xG301 devices.

Application Example Changes#

New Examples | Modified Examples | Removed Examples | Deprecated Examples

New Examples#

Example Name Description Supported Software Variants if applicable Supported Modes Supported OPNs / Boards / OPN Combinations Supported Host Interfaces

ot-ncp-ble-rcp

See README
    New sample application that integrates DMP BLE-RCP components with OpenThread NCP FTD CPC application, enabling OpenThread NCP with BLE RCP support.
 N/A NCP All supported OPNs, boards, modes and interfaces CPC

zigbee_ncp_ot_rcp_uart_gp_multi_rail

See README
    New sample application providing bi-directional Green Power support with CMP Zigbee NCP + OT RCP configuration using multi-rail UART interface.
 N/A NCP/RCP All supported OPNs, boards, modes and interfaces UART

Modified Examples#

Example Name Changes Supported Software Variants if applicable Supported Modes Supported OPNs / Boards / OPN Combinations Supported Host Interfaces

Zigbee - BLE Dynamic Multiprotocol Light SED

See sample here

    The Zigbee BLE - DynamicMultiprotocolLightSed sample project can now be built for boards with only one LED if the LED1 component is excluded from the project.
 N/A N/A N/A N/A

Zigbeed

See sample here
    The Zigbeed sample application is now extended with the --conf parameter, so the location of the zigbeed.conf is now configurable and not being hardcoded to /usr/local/etc/zigbeed.conf
 N/A N/A N/A N/A

Removed Examples#

None.

Deprecated Examples#

None.

Known Issues and Limitations#

ID Issue or Limitation Description GitHub / Salesforce Reference (if any) Workaround (if any) Affected Software Variants, Hardware, Modes, Host Interfaces
1209958 The Zigbee + OpenThread + BLE RCP may stop working in endurance testing (~2 hours) on MG24 and MG21 devices with constant and concurrent traffic on all three stacks. N/A None Zigbee + OpenThread + BLE RCP app
1385052 Coex-enabled RCP may still occasionally transmit TX ACK after losing the Grant even when Acking is disabled and TX Abort is enabled. N/A This will be fixed in future releases. Coex-enabled RCP
1385486 TX from coex-enabled RCP may infrequently happen without the request after turning on the non-802.15.4 compliant MAC Holdoff coex option. N/A This will be fixed in future releases. Coex-enabled RCP
1457086 Coex-enabled EFR32MG24 RCP may sometimes output higher than expected grant denied counts in the PTA counters. N/A This will be fixed in future releases. Coex-enabled RCP
1458795 Using BLE GAP scanning stop command in the Zigbee DMP GP - Proxy app may not be able to stop BLE scanning on certain parts. N/A None Zigbee DMP GP - Proxy app
1514786 Wi-Fi coexistence on SixG301 is currently not supported.
Other references: 1514794, 1515385.		 N/A This will be supported in future releases. SixG301 devices
1569847 Using the CMP Zigbee NCP + OpenThread RCP application with Bi-directional Green Power support, bi-directional commissioning may intermittently fail. N/A None EFR32xG24 devices