We currently have three versions of the Song3's...the standard version, a version with the Accuton midrange and a version with an AudioTechnology midrange and a beryllium tweeter (as you know since this is the one you have).
Since we have never shown the Accuton version and don't even show it on our web site yet, this is the model we will be "introducing" at AXPONA. We have many pairs of these in production now, but haven't announced it publicly since the audio press seems to only talk about new products where small manufacturers are concerned. So this "new" model is what we will be showing.
We are also working on another potential model and, if all goes well, we may be introducing that one as well. Stay tuned...