By David Betancourt and Michael Cavna, The Washington Post Marvel Studios is gleefully tipping its hand early for its next Avengers films — with the clear aim to pull us into its larger, big-stakes game. Shooting began last month in Atlanta for “Avengers: Infinity War” (due out in the summer of 2018), to be immediately followed by production of the follow-up 2019 Avengers sequel. Over the weekend, Marvel released an “Infinity War” featurette, and star Robert Downey Jr.