Hello. I know for a fact there are some releases from, for example, Apple Music, which offer a Dolby Atmos version of the audio.
This version of the audio contains audio “objects” which are mapped to a virtual, spatial point from which the listener is supposed to perceive the audio. This is then converted and mapped to whatever multichannel/surround speaker setup the listener has.
Thus, obviously, it is not the same master, nor the same recording anyways, since we already make a point to separate stereo from surround. However, we do not make the same distinction for DTS vs. AC3, because they are different codecs that are however used to encode the same audio, lossily.
So, what do we do? For an example [though there may be examples in downloadable audio, or physical Blu-ray media, none of which I know of anyways, so if you have an example…] we have the just released re-recording of Taylor Swift’s album “Red”, in Apple Music, and the corresponding MusicBrainz release entry. We know the release has Dolby Atmos and spatial audio because it is listed under “audioTraits” on the source code of the webpage for the release, on Apple Music.
However! None of this audio data is listed on the MusicBrainz entry. If not to tag the music, we should at least provide information, no? I’m surprised the Atmos recordings aren’t listed already because Taylor Swift is an extremely popular artist right now, so I’m just left to assume nobody has thought about it, or at least the topic hasn’t been touched here in the forum. We should tackle the topic while it’s still lukewarm (it isn’t a hot topic. It has cooled down a bit, honestly.)