Dolby Atmos? Spacial audio? Yawn.
I would say keep an open mind and wait until you've had a chance to hear it before forming an opinion.
I don't have a multichannel system or listening experience myself, but I have seen a consistent enthusiastic response from classical music listeners for immersive audio. For example, the classical music subforum on Audio Asylum has some members who are very serious and knowledgeable about classical music and recordings, and who strongly favor multichannel releases. I'm not currently in a position to make major changes to my system, but seeing this kind of reaction from multiple sources has made me curious and open to the possibility.
Here are impressions from Chris Connaker of the Audiophile Style website, after installing his multichannel system:
https://audiophilestyle.com/ca/immersive/thoughts-on-immersive-audio-r1117/
Admittedly classical music isn't his primary listening, but his comments are relevant:
I've listened to more classical music in the last week, than I have in the last several years combined. The sole reason is immersive audio. The music hasn't changed, but the presentation has. There is no better genre for immersive audio than classical music. One reason is that no genre has dedicated venues such as the Berliner Philharmonie and the Wiener Musikverein, which play such a large role in the sound of the performance. Immersive audio has the ability to place the listener in any seat in the house, to hear the musicians, the attack, sustain, decay, release, and the reverberations of the space exactly as they sounded during the performance. Call me crazy, but I have no interest in hearing the reverberations and bad echos from a Pearl Jam show at Target Center in Minneapolis.
One example of immersive audio recreating a concert venue impeccably, can be heard on the album John Williams, The Berlin Concert. The second track, titled Olympic Fanfare and Theme, has a little venue noise before the track starts. It's only about 2 seconds before the track, but it's enough venue information to give the listener really good placement cues. Once the music starts, and one can hear all the music and reverb, it's fantastic, but even the tiny two second clip is good enough to create the ultimate illusion. This is similar in a way to playing an album recorded on tape. When one hits play, tape his is often present before the music starts. With immersive audio, the venue is often present when there is no music playing.
In any case, I'm sure that the Solti cycle will be offered in multiple formats, including probably a CD box set. The studios are achieving excellent results with today's remastering and restoration technology (such as in the Furtwangler studio box set) and it should be a good release.