In case anyone hasn't already seen the new Spec page for the HDPlex 400w here is a screenshot I took with the relevant changes highlighted:
So this confirms the swap of the CPU and GPU 8pin headers, confirms a dual 6+2pin cable included, and two basically minor changes to the pinout.
As a side note, I tried asking Larry about the new "Sense GND" pin on the PCIe header but only got the answer that the 400w will come with a new PCIe cable that is different from the one for the 300w. So I guess its one of those wait and see type of things.
So this confirms the swap of the CPU and GPU 8pin headers, confirms a dual 6+2pin cable included, and two basically minor changes to the pinout.
As a side note, I tried asking Larry about the new "Sense GND" pin on the PCIe header but only got the answer that the 400w will come with a new PCIe cable that is different from the one for the 300w. So I guess its one of those wait and see type of things.