First impressions after one listen to Atmos downmixed to 4.1:
Mix: 3/5: Mix is probably as discrete as it can be. There is stuff up front and stuff in rears. But it's a very nebulous/ shoegazey sound anyway, of synthetic strings and distorted guitar, so it's always going to sound a bit of a fuzzy mess. Perhaps in Atmos things are further separated out, or perhaps the cavernous sound is simply more fitting if realistically portrayed in 3D, but the 5.1 downmix is underwhelming. The mix is competent but the style/ sound of the music does not benefit as much as others do.
Sound: 3/5: For the same reasons as above, it's difficult to make this sound stunning. (Though small sections which are basically vocals plus piano, for example, could have sounded great if they had wanted them to.)
Music: 4/5: The Cure are my favourite band, perhaps apart from The Beatles, so in time I'm sure at least some of the tracks will become 5/5 material for me. On a first listen, it's a typical late-Cure sound and the album is homogenous, both factors being both good and bad.
Atmos credits:
Robert Smith has already said he mixed the stereo at home and the Atmos was done in Abbey Road, with him in attendance. But there's no mention of the Atmos mixing in the sleeve notes, it just says "Mixed by Robert Smith & Paul Corkett @ Lostworld Studios" (which must mean his home studio). So it might have been mixed in Atmos by the same pair but maybe it was someone else with more experience in Atmos.
The Atmos disc is described as a 'bonus disc' on the hype sticker (giving it less importance than the Instrumental disc). I wonder how many people will be buying this expecting a video Blu-ray - there will be a lot of Cure fans who've not heard of or understand about audio-only discs. (There is video but the just the usual slow moving images.)
So if I voted on this at present it would be 3*3+2*3+1*4=9+6+4 = 19/30 = 6.33 = 6. I love The Cure and am happy to have this in my collection, but I couldn't at the moment recommend it to someone who's not a Curehead as a surround demo. (Which, I emphasise again, I feel is not due to the Atmos mixing but to the intended musical/ recording style.)