From looking at the spec sheet for the wifi module in the dev kit, it appears that the hardware supports Zigbee in addition to wifi. Is there any chance that the Zigbee functionality will be available on the device?
And, on the dev kit, there is a u.fl connector on the wifi module that isn’t connected to an antenna. Is that the connector for the Zigbee antenna?
I don’t currently have any Zigbee devices, but being a bit of a home automation nerd, I’d be interested to experiment with a phone that supports Zigbee.