Can you clarify and confirm if Z-Stack 3 (3.x) firmware will be supported or not by zigpy-cc as it is?

Don't own a CC2531 USB stick yet but would just like to clarify and confirm Z-Stack 3.x support ;)

No pressure or urgency but I am also indirectly asking to know if CC2538 and CC2652R can be supported in the future too as the Z-Stack 3 (3.x) firmware can also be used on those chips as well.