They're basically giving it the same kind of slot that Dunkirk had. While a historical film, when setting up thr project, Nolan made a series of demands requiring the project to be treated as a major event film by whichever studio wanted to pick it up (this included some pretty goddamn wild requirements. Not only a guaranteed theatrical window but also a window in which the studioncouldnt release anything else either. Universal agreed to the terms)

Also unironically I think Nolan enjoys releasing movies on his birthday.