It's here! Marvel Studios has finally released the official trailer for Avengers: Infinity War! Featuring Black Panther (Chadwick Boseman), Black Widow (Scarlett Johansson), Iron Man (Robert Downey Jr.), Thor (Chris Hemsworth), Spider-Man (Tom Holland), Hulk (mark Ruffalo), Dr. Strange (Benedict Cumberbatch), Gamora (Zoe Saldana), War Machine (Don Cheadle) and more, this sequel is said to be "the ultimate, deadliest showdown of all time," 10 years in the making! Get a sneak peek of Avengers: Infinity War below before the new film opens in theaters May 4, 2018.