There are some (non DM) 8000 images that, while not able to directly decode the AC3+ channels, can pass the AC3+ stream to an A/V receiver. Unfortunately, my A/V receiver being too old cannot decode the stream, but I can see it is receiving "something".
As what "Homey" wrote regarding waiting four years with no progress from DMM, I totally agree and will remember it when the time will come to buy a new box.