I've heard both it does and it doesn't have the ability to play dts hd ma tracks. None of the info I've seen or heard is from a rock solid source, just a lot of rumors both way.
To the best of my knowlege, so far only a handful of movies have a dts hd ma track. Regardless, at the moment, with dts hd ma, I only get 5.1 channels from a 7.1 track. I'm losing 2 channels of sound.

As some one with a 7.2 setup, that is a concern.
Jack