With Infinity War completed, the Russo brothers have moved on to the sequel, Avengers 4, which is currently in post-production, and it's learned they won't be finished until at least March, meaning at least two months prior to the film's release.
Deadline has a write-up about the Russo brothers' plans for their latest projects where they offer an update on Avengers 4.
"We’ve worked on the edit all summer and we’re excited to finally get these missing pieces in the film, and then we expect to be in post through the fall and winter,” Anthony Russo said. “We hope to be done by March."
Joe Russo continues by ackhowledging how well the MCU has been developed and how the fans have stuck with it.
"It was so gratifying that in a movie with this scope and scale and that wide of an audience, that we were able to end with a gut punch and yet the audience stayed with us and found value and kept coming back," Joe Russo said. "It’s a rare thing to find in commercial filmmaking and we know it had a lot to do with the the capital that’s been built up around these characters for the last ten years of Marvel filmmaking. The audience is so invested in these characters that they’re willing to stick with them even through the hard stuff. It has been out great pleasure as storytellers to take them through that hard stuff and have it be a cathartic and even entertaining experience at times.”
The Avengers 4
Joe Russo also previously said he feels Avengers 4 is their best work at Marvel.
"You know, we’re very proud of it. I think ultimately Avengers 4 may be our best work for Marvel. I think we’ve grown with every movie that we’ve made there. We’ve grown with the characters. We’ve grown with the cast. As filmmakers we’re very happy and very excited with the movie," Joe Russo said. "I feel like with Avengers 4, because it was made before there was any response to Avengers 3, it’s really pure in that regard. The storytelling is very pure. It’s without any sort of external noise creeping in at."
Avengers 4 has a May 3, 2019 release starring Robert Downey Jr., Chris Evans, Chris Hemsworth, Scarlett Johnasson, Mark Ruffalo and Jeremy Renner.