Although there's nothing official forthcoming from from Disney, Marvel, the Russo Brothers, or any of the cast, a line from the website of the cinematographer of 'Avengers 4' has set the rumour mill running.
According to cinematographer Trent Opaloch's website and sighted by Omega Underground, his resume names 'Avengers 4' as... drum-roll... 'Avengers: End Game'. Now, obviously, you have to take this with a pinch of salt primarily because it's just a cinematographer's website and it's not exactly what you'd call solid confirmation.
Moreover, in an interview with Uproxx, directors Anthony and Joe Russo were asked if the title of 'Avengers 4' had mentioned by anyone on screen in 'Infinity War' and denied it. You'll recall how there's a moment in that film when Dr. Strange turns to Iron Man and the gang and tells them that they're "now in the endgame."
So, there's that. Not only that, it's not actually a great title when you come right down to it. The previously rumoured title, 'Infinity Gauntlet', had a much nicer ring to it and was in keeping with the comic-book origins.
Marvel head honcho Kevin Feige previously stated that the title for 'Avengers 4' wouldn't be released until the end of 2018, as 'Ant-Man and the Wasp' is still to come next month and there's also Brie Larson and 'Captain Marvel' in March 2019 before 'Avengers 4' - whatever it ends being called - in May 2019.
Now - over to you. What do you make of it? Let us know your thoughts!
