Is there a plan to sell the new CW313 board alone?
There are boards to use CW308T target boards with a CW313 but I don’t see any sign of the opposite being made possible, i.e. plugging a CW312 target into a CW308 UFO board.
As the CW308 and CW313 aren’t 1:1 equivalent especially in terms of I/Os, I don’t think a CW308T target exposing an edge connector to plug CW312 would really make sense.