Avengers: Endgame--a movie that wraps up 10 years worth of MCU stories and concludes the ongoing Phase 3--is finally finished, it seems. Directors Joe and Anthony Russo tweeted recently that the movie is "locked," which seems to suggest that the editing process is finished.
The last day of editing was March 8, it seems, as referenced in the tweet by the sundae bar that was apparently created for the editors to enjoy. The editors may be sad to see the ice cream go, but they're likely happy to have completed the project.
Last day of editorial Sundae Bar. Picture is locked... pic.twitter.com/IzC1txDrii
— Russo Brothers (@Russo_Brothers) March 8, 2019
The last we heard, Endgame was expected to have a run time of around three hours long, making it the longest MCU film to date. That comment came while the editing process was still underway, so it's possible the film is shorter. Whatever the case, the directors say Disney/Marvel are OK with Endgame being so long.
"This is a culmination film of 22 movies, it's a lot of storytelling to work into it," the directors said. "Emotion is an intrinsic part of that to us. When you have to tell a really complicated story and you want strong emotional moments with the characters, it just requires a certain amount of real estate. This one, in particular, feels like three hours worth of real estate."
For what it's worth, 2018's Avengers: Infinity War was already a very long movie--coming in at 2 hours and 40 minutes. Endgame hits theatres on April 26, following Captain Marvel that just opened in theatres to massive success. That has a post-credits scene that sets up Endgame, and we've also got a roundup of Captain Marvel's Easter eggs.