Christopher Nolan’s ‘Interstellar’ 10th Anniversary Re-Release Moves to December (EXCLUSIVE)

Turns out the film prints weren't destroyed after all:

Studio sources dispute a rumor that 70mm prints of "Interstellar" were destroyed; Paramount claims it has archived more copies of the movie than most other pictures. However, because reels of film experience wear and tear while playing on the big screen, it’s not uncommon for them to be unusable after their theatrical runs.