jc>Funny you left out that other machine you once much promoted (the Omega)
The Iyonix contrary to what you seem to infer is *still* needed as the A9 can't be exactly described as a "desktop" computer can it? Quite apart from its somewhat "beta" state (the problems you are aware of such as the SCL issue). And the A9's *very limited* expansion capabilities (e.g., no internal expansion, one internal IDE device, slow USB 1.1, no ability to handle multiple monitors, can't burn C/DVD's).
A9 has it's niche as a small computing device - and in embedded environments (once it is commercially released) it should excel at that. As a desktop computer sadly it does not (and cannot) pass muster (IMHO). Simply "wishing" the Iyonix will go away - if that's what you're at - is quite unhelpful.
As a more general comment I think it's rather ironic that the above article (which quotes a compeditor of castle saying that he "hopes they weather the storm" - sowing seeds of doubt eh ?) preceeds an update that quite comprehensively calls into question a previous "Castle rubbishing" article from drobe. Hope we don't have to wait too long for the inevitable "update" clarifying the current article.