ZigBee Soc/microcontrollers on SmartThigns Hub V3

I am curious about the SmartThings Hub V3 hardware architecture. I just looked for some chip informtion about it and located Samsung SmartThings Hub v3 (STH-ETH-300) - TechInfoDepot
However, what interests me is that compared with SmartThings Hub V2, there is no ZigBee SoC ( V2 has an EM3587 ). How does SmartThings Hub V3 handle ZigBee? Does the ZigBee stack run on the CPU i.MX6ULL?