Nah, Microsoft doesn't want DD. They want to force another generation before that. The developers, musicians, and studios would want DD, so they can cut out the middle man, the publishers, people like Microsoft, in several cases.
Right now, there's too many formats for DD to really work, anyways, and nearly all have painstakingly annoying DRM, too. I think it would be better to wait about eight years before we really get to it, that way, when it happens, it'll happen right.