Audio for the next generation optical disk, explaining DD+/D

[zombie]

While I'd certainly be interested in the 13.1 setup they mention whatever happened to the proposed 10.2 setup mentioned a couple of years ago? I'm curious to see what studio's audio departments can do with two subs. Regardless, what I'd really like to see available on the audio side of Blu-ray discs would be an overhead speaker. Having a speaker in the center of the HT ceiling could be amazing for many action films, especially war films where a jet, helicopter, or a missile is flying over your head. It'd do wonders in getting a viewer even more "into" a movie.