The maximum channel count for the home version of Auro-3D will be 13.1 - the 7.1 bed that we all know and love, L, C, R, LS and RS height channels, and a mono overhead channel. This implementation will be supported in the Datasat processors that incorporate Auro decoding.
That is not my understanding. Over at AVForums (UK), Neil Davidson was very clear that Auro 13.1 set-up is 6,6,1 meaning a single back surround with a single back height and VOG in addition to the standard 5.1 plus their respective heights. If the content is 7.1 the two back surrounds would be "mono'd".
BTW, Auro technologies was kind enough to let me know that other processors (than the Datasat and the Storm) will follow, but they are (understandably) bound to keep names and dates to themselves. After those, the stand-alone (add-on) Auro processor will follow.
Me, I am completing a HT build in the next five months in which I will install only the plain five speakers plus two subs. But everything is conceived to route for more speakers anywhere the chosen multi-speaker format directs... 13.1? Let's have it!