I would look at the following:
We demoed their technology at our booth during NAB.
I personally have investigated these options and have a few emails out but have not heard back yet from either minicaster or teradek. I am unclear about whether or not the WNA-1 would be required for control of the camera or if the tools from these other companies can interface with the camera on their own? Would I need to tether the cube/minicaster to the camera via the lemo ethernet as well as SDI for video?
I assume that there would need to be some form of data connection to the camera from these devices otherwise there would be no avenue for control. So far I am only talking about the original alexa and not the the plus, studio, or M as that is what I have worked with most.