The first Avengers movie is one of the most successful movies of all time. As a result, next year's sequel - Avengers: Age of Ultron - is one of the most eagerly anticipated movies in the pipeline. However, fans are looking forward even further ahead than that to the third Avengers movie, which most people believe will hit our screens in 2018 to bring the third phase of the Marvel Cinematic Universe to a close. As a result of all the talk and anticipation, rumours are already starting to surface about the project - despite the fact that even its predecessor is still eight months away from release. It's pretty much confirmed that Thanos is going to be the main villain and that he will be utilising the power of the completed Infinity Gauntlet to cause universal havoc, but very little else is clear about it - therefore it literally all is just rumour at the moment. On that note, this article is going to take a look at just some of the rumours we've heard regarding the third Avengers movie. Here are ten rumours that are already surfacing about Avengers 3 (contains Marvel Cinematic Universe spoilers)...