[REQUEST] Silicon Labs Concurrent Multiprotocol Zigbee in NCP mode and Open-Thread in RCP mode (Alpha) about zigbee-firmware HOT 1 OPEN

FYI, Silicon Labs has now also released Gecko SDK 4.2.0 with Zigbee EmberZNet SDK 7.2.0.0

https://github.com/SiliconLabs/gecko_sdk/releases/tag/v4.2.0

Any chance you could release some builds for zigpy and zigbee-herdsman developers to test?

It looks to use EZSP v9 (EmberZNet Serial Protocol version 9) same as Zigbee EmberZNet 7.1

https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-7.2.0.0.pdf

New features are mostly related to Dynamic Multiprotocol and multi-PAN 802.15.4 in RCP mode:

• Secure key storage support for MG2x parts that support Secure Vault-High

• Dynamic Multiprotocol Bluetooth and multi-PAN 802.15.4 in RCP mode

• Dynamic Multiprotocol Zigbee-NCP + Bluetooth-NCP (experimental)

• Manufacturing Library (MfgLib) support for Concurrent Multiprotocol RCP

• Zigbee + OpenThread Concurrent Lis-tening on MG24 parts (experimental)

• Zigbee on Host (ZigbeeD) support for 32 bit and 64 bit x86 architecture (experimental)

• MGM240S SiP Module Support

They also added simultaneous Dual-Band and Dual-PHY for Zigbee Smart Energy on MG24/MG12:

• MG24+Si4468 Dual-PHY Zigbee Smart Energy support
• MG12 Dual-Band 2.4GHz + SubGHz Zigbee Smart Energy support

Deprecated in release 7.2.0.0:

• The Secure EZSP feature will be removed in a future release.

PS: Silicon Labs also released Gecko SDK (GSDK) Version 4.1.4.0 as a bug-fix release that contains Zigbee EmberZNet SDK 7.1.4.0:

https://github.com/SiliconLabs/gecko_sdk/releases/tag/v4.1.4

https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-7.1.4.0.pdf

from zigbee-firmware.