I am most concerned about how we will need to power the device on. Are we expected to do the paperclip trick?
That would be good to know. There are adapters which have a switch if KNC isn't going to use the 24 pin connector. I have soldered plugs with the "power on" circuit permanently closed and I just buy PSU that have a mechanical switch on the back of PSU. Same thing as paper clip trick but a little more secure and convenient.
There does not appear to be any other connectors on the pcb shown earlier aside from the 6pin PCIe. Unless there is also an as yet mentioned control board in the box I would say a jumpered PSU is likely.
Someone refresh my memory, this was a standard cell asic correct? 1.6W/GH on 28nm doesn't seem all that stupendous. Bitfury gets around 0.8W/GH on 55nm with a fully customized version. I wonder if the gen2 will be custom and can reach 0.6W/GH or less. That would be a feat of engineering.