Marvel Studios debuts Avengers 4 trailer – and finally reveals the movie's title...

With the fourth Avengers movie locked in for a May 4 UK release date, fans have been wondering exactly when the first trailer would drop. Thankfully the wait is over, with Disney unleashing an official trailer (in funky Cinemascope ratio) today – and also confirming the film's title...

We don't want to give away any spoilers, so watch it below.

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