I don't have HD yet, so I couldn't get the Blurays even if I wanted to. If I'm to offer informed commentary on the new mixes, someone's going to have to rip the audio and send it to me—preferably the core DTS 1509 kbps portion so I can send it to my receiver from the computer via S/PDIF. Though listening to it will probably make me ill rather quickly, I'd be happy to perform a full analysis of exactly how it sucks. ;) Just putting that out there in case anyone feels like doing that.
It does seem likely that it will be at least somewhat better than the 2004 version, but I seriously doubt it will come anywhere near the 70mm mix for dynamics or sound quality, or any of the other things that make that version as good as it is.