RJ explained this at the academy. The 8 or 16 channels are programed by the new to be released utility. There will be an option for each channel or all channels, and ssc.
If you want to program 16 channels of 50 pixels with 2 null nodes starting at channel 1, then selecting all will program 16 channels with the same configuration, but each will have its own start address.
first channel starting at 1
second starting at 151
third starting at 301
etc
etc
Now if you find that channel 3 must be changed to reverse order, You simply program channel 3, the other channels will remain unchanged.
The chips will be programed with the firmware, no pickit required, so no header.
Nice work by RJ, and the beta testers.
Can't wait for my kit order to arrive.