So I found 'Fire It Up', 'Take What You Want' and 'Kick' Atmos mixes on Tidal.
Have only listened to 'Take What You Want' so far and was a little surprised to hear what I thought was a relatively conservative, 'commercial' sounding Atmos mix for lack of a better word, assuming this one was in fact done by Steven Wilson.
Can't really tell since the Tidal
credits don't list an 'Immersive Mix Engineer' and only Ronan McHugh as 'Mix Engineer'.
I do hear Wilson's signature background vocals in the rears so maybe this one/these Atmos mixes are in fact his.
Re: the 'commercial' sound I'm hearing in this track, I suppose it's the drums mostly, particularly in the verses, during which to me, they don't sound that hot.
The drums are fairly big and have good bottom end at the top of the track and then get mixed quite a bit lower for the verses. This is not untraditional of course, to make room for the vocal.
I suppose not much Steven can/could do about the drum sound in particular and he may well be keeping the overall mix choices similar to what was done for the stereo mixes, assuming he did not do those.
This combined with the general lack of the kind of discrete stuff I usually hear in a Wilson surround mix informed my first blush opinion. For instance I love the way he typically has a lot of the lead vocal in the center speaker. None of that here for this mix.
There isn't a complete lack of discreteness, elements do appear in the rears throughout the mix but usually I hear stuff in the rears most of the the time with Wilson mixes. Again, not so much of that here.
Other thoughts are just that I remember when I first heard Wilson's mixes for Yes 'Fragile' vs the previous 'commercial' more polished mixes I thought 'yeah it's cool to hear a more musical and intimate mix for this record'. The could perhaps also be said for his mix of Rush's 'A Farewell To Kings'.
I'm just not hearing that kind of treatment in this Def Leppard mix for the single track I've listened to so far. It sounds a little more like the traditional 'big stereo' Atmos mixes others have done.
Fire It Up -
https://tidal.com/browse/track/228803703
Take What You Want -
https://tidal.com/browse/track/228803704
Kick -
https://tidal.com/browse/track/228803705
EDIT: Having listened to all 3 tracks now I'm not hearing anything in the other two to change my view. If these are in fact Steven Wilson Atmos mixes they are by far his most traditional mixes to date that I can recall. Don't get me wrong they don't suck by any means I guess I was just expecting something different.
Maybe I'm crazy and have gotten it all wrong, will be interested to hear what others think about these.
Overall it does sound like it will be a fun record to listen to.