I don't really know tbh, Interstellar also had that on the back. Maybe they just mean that the DTS-HDMA 5.1 that is in the disc is what you heard back in cinemas? Probably
i kept wondering if Tenet 4K UHD would have Atmos mix...
It will have an Atmos mix, 100%, according also to Dolby's website.
thank you and I hope Tenet would have Atmos mix on 4K UHD, why I asked because what I can think of, there are 2 movies: The Revenant and Dawn of the Planet of the Apes featured Dolby Atmos in theater but not on 4K UHD discsThat doesn't matter practically talking, because if it will have an Atmos mix theatrically then automatically the 4k disc will have it.