I think Jens wants to surprise everyone and doesn't wont to give too much away has Natami or another project may use his ideas.
I agree with you that Clone_A is more in the dark has less information.
Clone A has had a public demonstration according to that but I dont know if it been updated to handle AGA yet.
I watched google video of it but google have deleted it and not put into there youtube.
found the interview with Total amiga link