My copy arrived today (24th April) and I've just watched it.
I can honestly say it's quite the experience on BluRay and a definite improvement from the DVD. Never one to short change us, this two disc set also contains special features from BOTH DVD releases.
The picture itself can be a little soft at times, but only very infrequently. On the whole it's a very well presented picture. Plenty of detail, some little bits and pieces I'd only noticed upon watching this version, and this is my favourite film. The colours have been altered ever so slightly and are much richer, but I think that's largely because there's much more resolution with HD.
The DTS-HD soundtrack is phenomenal. I've heard this film in standard NICAM on VHS, Dolby 5.1 on the original DVD release and in DTS on the 60th Anniversary 2-disc re-release. The HD soundtrack presented on this feature blows all these out the water and it's almost formidable in it's power. It's aggressive, but never overbearing. Dialogue is clear and consistent throughout and the rear channels get a thorough working over.
If you've got any precious trinkets on mantlepieces or shelves I'd glue them down, as the LFE on this will shake, rattle and roll the plaster of the walls with enough volume. If you have neighbours, and you like them, best forewarn before watching. If you don't like your neighbours, or are detached (like me) crank this up and get in the war.
In summary, an excellent addition to the collection and worth every penny. If I could give it ten stars I would, as it's also my favourite film ever!