The deal is done, according to "amillians" on AVS Forums. According to the post from yesterday morning MMC is in, while discussion on the other requested feature, iHD continues. Now the only question is how much you trust information from someone who's stated location is "a van down by the river".
Beyond that, the (460 page?) thread is an interesting read, and ostensibly features many responses from a manager at Microsoft and debate of the various issues between each format, all in all a decent way to kill some time before football starts on a Sunday, because you know that's why you have an HDTV.