I see bits and pieces about a focus control module, utilizing the camera's autofocus system...does anyone know if is this the case?  And if so, are there only certain compatible cameras? I'm using a Nikon D4 & D810, and hope to clarify this before this thing drops!

wondering the same thing

Thanks for your attention. We'll release more details on our website soon, please keep an eye on it.

Do you have any informations on the external focus motor? I don't see any informations on it and no one from dji.com seems able to communicate a date for the release or a price.
This is a very important feature if you want to be able to use it with others cameras and manual lenses, not listed compatible with the internal focus system.
I'm thinking of buying the Crane 2 which has already this feature available if Dji don't release more infos on this. Would be a shame because the Ronin-s seems better on all others aspect!