Just six days after Avengers: Doomsday‘s first trailer went live online, Marvel Studios turned up at San Diego Comic-Con with a brand new one. More than 6,500 fans watched the Hall H-exclusive footage, expecting an extended version of last week’s trailer. Instead, Kevin Feige unveiled a darker, far more Doom-centric trailer packed with several new reveals. (Walt Disney Studios Motion Pictures)What Happens in the New Trailer for Avengers: Doomsday? Descriptions of the SDCC footage make one thing clear: this trailer packs the same kind of punch as the main Avengers: Infinity War trailer did in 2018.