There are different marketing strategies when it comes to movie trailers. One is the Project Hail Mary approach, in which the final trailer pretty much gives away the entire movie, trusting that the audience will still come along for the ride because it's a sci-fi adventure, not a whodunnit. The other extreme is Universal Pictures' deliberately vague trailers for Disclosure Day, director Steven Spielberg's return to his "aliens are among us" roots, which give tantalizing hints about the basic premise and little more.
Per the official logline: “If you found out we weren’t alone, if someone showed you, proved it to you, would that frighten you? This summer, the truth belongs to 7 billion people. We are coming close to… Disclosure Day.”
As previously reported, David Koepp, who has worked with Spielberg on numerous projects (including Jurassic Park and War of the Worlds), wrote the screenplay, while John Williams composed the score. Emily Blunt stars as a TV meteorologist in Kansas City. Her co-stars include Josh O’Connor, Colin Firth, Eve Hewson, Colman Domingo, Wyatt Russell, Elizabeth Marvel, Henry Lloyd-Hughes, Michael Gaston, and Mckenna Bridger. Professional wrestlers Chavo Guerrero Jr., Lance Archer, and Brian Cage will also appear.
source https://arstechnica.com/culture/2026/03/aliens-announce-their-presence-in-latest-disclosure-day-trailer/