Look for the 4K disc to include HDR10 high dynamic range and Dolby Atmos audio. Unfortunately, we’ve confirmed with the studio that the aspect ratio for all of these SKUs will be 2.39:1 only, matching the previous release of Dune: Part One (2021) on disc. These discs will not replicate the variable IMAX aspect ratio in 1.78:1

But… the frustrating thing here is that most fans of Dune: Part Two would prefer to see it on disc in a 1.78:1 ratio that preserves something of the IMAX experience.
Villeneuve has hinted in interviews that he’s approved such a master, and Fraser has commented on a number of occasions that he wants the IMAX version on disc as well. Given all this, the only conclusion one can arrive at is that Warner Bros. Discovery Home Entertainment already has plans to re-issue these films on Blu-ray and 4K Ultra HD in an IMAX ratio at a later date, perhaps when Dune Messiah is complete.

If that’s the case, it would certainly be nice if they’d at least let fans know. In the meantime,

the film was approved for wide release in 2.39

and looks marvelous in that ratio. Comparing this image to the 4K Digital version (available on Apple TV and elsewhere) reveals no contest—this 4K disc is hands down the best way to watch Dune: Part Two at home.