Which nRF MCU is recommended for new end sensor design ?

Hello,

We are designing a new Zigbee/Thread end-device sensor and I'm wondering what is the recommended part for it.

I have a demo running with nRF5340 (because the platform was available when we started the demo). I previously runned a 1st version of the demo on nRF52840.

From the website, I understand the nRF52 chips aren't recommended for new designs and the Zboss stack will not be maintained in the future on these MCU

I understood the nRF5340 was more recommended for controller nodes on zigbee network but it's too marked as not recommended for new zigbee design ?

I see that nRF54L chips are now the reference for Zigbee and Thread but they seems still in an "early production" state (and software support seems not yet stable).

So my question is which MCU should I used between the nRF5340 and the nRF54L15 (or another variant if reducing RAM and Flash needs) for a future Zigbee/Thread sensor ?

Best regards,

Gaël

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