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A funny thing happened yesterday. A few hours after the announcement that the first teaser trailer for Avengers: Age of Ultron would premiere next week during the airing of Agents of S.H.I.E.L.D., the trailer leaked online. Typically, film studios (especially ones as big as Marvel/Disney) will take the trailer down and feign ignorance until the scheduled release date. However, facing the unfortunate nature of the situation, they simply released the trailer less than a week early in complete 1080p HD quality alongside the film’s first official poster.

Age of Ultron, as we’ve recounted since the film’s announcement, is a direct sequel to 2012’s The Avengers and represents the climax of Marvel’s “Phase 2” of films in which a rogue A.I., Ultron (James Spader), goes on a rampage against the cast of superheroes. If you thought The Avengers was huge, just wait until Age of Ultron is released. As seen in the trailer (and hinted at dozens of times since its announcement), the film will feature new Avengers in the forms of Quicksilver (Aaron Johnson) and the Scarlet Witch (Elizabeth Olsen), as well as a glimpse of The Hulk (Mark Ruffalo) fighting a Hulkbuster. While the trailer’s a bit too gloomy, expect the same level of action and comedy when it hits theaters in May 2015.

Avengers: Age of Ultron poster