Is the new "Suzi" standard just Zigbee 4.0 for Sub-GHz frequency range (i.e. more or less simply seperate Zigbee 4.0 network over 868MHz or 915MHz)?

[Hedda]

Is the new "Suzi" standard (which got name SubGHz Zigbee) just Zigbee 4.0 over Sub-GHz frequency range (e.g. 868MHz and 915MHz)?

• https://csa-iot.org/all-solutions/suzi/

Reference:

• https://csa-iot.org/newsroom/the-connectivity-standards-alliance-announces-zigbee-4-0-and-suzi-empowering-the-next-generation-of-secure-interoperable-iot-devices/

  • https://www.youtube.com/watch?v=KpuFZSvBLhQ

If that assumption is correct then it it perhaps possible for zigbee-on-host with Zigbee 4.0 support could support that the new "Suzi" standard could possibly be used if only OpenThread RCP firmware is supported on a single-band (or dual-band) MCU/SoC with a compatible Sub-GHz radio supporting OpenThread RCP firmware?

• [REQUEST] Support for Zigbee 4.0 in the Ziggurat stack #30

That is, if and when zigbee-on-host supports Zigbee 4.0 then it might be possible to extend it for Suzi support using OpenThread RCP firmware on ub-GHz frequency range via a CC1354P (CC1354) and CC1352P (CC1352) dual-band radio boards/adapters? See:

• [SUGGESTION] OpenThread RCP firmware on CC1354P (CC1354) and CC1352P (CC1352) dual-band radios Koenkk/OpenThread-TexasInstruments-firmware#10

Or what are your thoughts on this?

Introducing Suzi: Expanding Connectivity Through Long-Range Mesh Networking

Alongside Zigbee 4.0, the Alliance introduces Suzi, the new brand for the standards-based wireless technology that extends the reach and reliability of IoT connectivity through long-range, Sub-GHz mesh networking.

Built on the proven Zigbee network layer, Suzi combines long-range performance, low power consumption, and multi-vendor interoperability to unlock new opportunities in residential, commercial, and industrial applications. From connecting outdoor living spaces to enabling large-scale networks in buildings and cities, Suzi delivers robust, efficient communication in environments demanding extended coverage and minimal interference.

Adhering to the same strong security principles that define all Alliance technologies, Suzi aligns with international standards to ensure a secure and trusted ecosystem. Its framework allows developers, manufacturers, and consumers the freedom to build and deploy interoperable devices from a global ecosystem of trusted suppliers.

The Suzi Certification Program is planned to open in the first half of 2026, enabling manufacturers to begin certifying products that bring the benefits of long-range, low-power mesh networking to the connected world.

A Connected Future, Built on Proven Foundations

Together, Zigbee 4.0 and Suzi demonstrate the Alliance’s dedication to strengthening global IoT networks through open innovation and collective progress. By combining enhanced security, simplified onboarding, and extended range, these new features expand the reach and resilience of the smart ecosystem, making secure, intelligent connectivity accessible everywhere.

Learn more about Zigbee and Suzi. Developers interested in learning more about these enhancements can access the Zigbee 4.0 specification documents here.