While the standard Blu-ray was already impressive, the 4K Ultra HD version (released as part of the Nolan Collection and later in various 2021/2024 editions) takes it further: HDR10 Detail:
The IMAX 4K transfer is a game-changer. The film's already-impressive visuals have been beautifully restored, with crisp details and a wider color palette that makes the movie's depiction of wormhole travel and planetary exploration feel even more immersive. The sound design is equally impressive, with a richly layered soundtrack that complements Hans Zimmer's pulsing score. interstellar imax 4k 2021 download
DTS-HD Master Audio 5.1. Interestingly, Nolan famously prefers 5.1 over Dolby Atmos to maintain the theatrical sound design he intended. While the standard Blu-ray was already impressive, the
The true "IMAX experience" at home—where the screen expands from a letterboxed 2.39:1 to a taller 1.78:1 for approximately 64 minutes of footage—is exclusive to physical media Digital Downloads: DTS-HD Master Audio 5
A: Yes, select IMAX theaters replayed it in September/October 2021 for the 7th anniversary. This is likely why "2021" is attached to the search term.