I've run out of my quota of 10s for the year, so this will have to be a '9'.
Main reason is the lack of vocals and lyrics, and the fact that there are just better surround mixes released this year that are more deserving of a '10'.
That said, fidelity is quite remarkable, and I enjoy a lot of the music. I can imagine I will come to love this album even more the more I hear it, as I already have a much more favorable opinion on the second full listen.
Don't be put off from getting this release simply due to the lack of vocals and lyrics. It really is quite a very good album, even though it doesn't quite measure up to the rest of their catalogue (particularly "Dark Side", "Wish You Were Here", "The Wall", "Division Bell", etc)
Plus since this is a new release in high-res surround that you don't have to pay with an arm and a leg for it, it's imperative that it be bought to help sales increase, giving us even more of a chance for more surround releases.
One final note, I'm really enjoying some of the extra videos quite a lot.