Thanks for the link to the review; it seems video quality is not the best - I watched the small chuncks on youtube, and dust & dropouts seems to be still there, like in the DVD and HDTV, so the master used should be the same...
But the DTS-MA 5.1 track could be interested, plus I'm really curious to watch the new featurette... we'll see when it's out.
Maybe the latter will be useful, in the case I'll work on the extra disc!