It may be a bit before he responds since he is at Can Jam right now. As I understand he is working on getting a casing made for the plug since there is not one that is currently made.
This japanese guy managed to get a lineout cable out of the recording cable. I've tried to contact him (in english), but he doesn't seem to answer.
AFIK Ken has seen it. Also I had obtained a car charger unit that has a line out on it and as it has been confirmed on the A800 series the unit is locked where it requires external power(charging) to enable the line out.(It looks like Ken has tired the pinout configuration in that thread but, due to the fact it is locked Ken did the reaserch to bypass this and had gotten it to work.)
Well the model the guy has does not appear to be locked in the same way the A800 series is since the pin out configuration has been tried on the A800 series also.(It did not work, which lead to part of the conclusion that they have their line out locked on this preticular series)