Two big MCU movie trailers are coming in December 2025, and the fans are excited for it. Yes! The first-look teaser for Spider-Man: Brand New Day and Avengers: Doomsday is releasing next month.
The upcoming Comic Con Brazil (CCXP 2025) will be taking place between December 4–8 at the São Paulo Expo in São Paulo.
As previously reported, Avengers: Doomsday will be releasing on December 18, attached to Avatar: Fire and Ash in theaters. But before that, at CCXP Brazil, there are big chances that Marvel Studios would show the trailer in a private screening room as part of the exclusive screenings. Already, there are rumors that they have created 30+ versions of the trailers.
Also, there will be a Chinese premiere of Avatar: Fire and Ash, which will take place in Sanya, China, on December 8, 2025. We can expect the Doomsday previews there.
Key Dates (According to Leaks)
• December 7, 2025 — Private presentation at CCXP
• December 8, 2025 — High leak risk from China
• December 18, 2025 — Official trailer premiere in theaters
• December 22, 2025 — Online trailer release
During the CCXP Brazil event, Sony’s panel taking place on December 6 will include a private screening of the Spider-Man: Brand New Day teaser for guests. Also, the first full trailer for Spider-Man: Brand New Day will be released during Super Bowl LX on February 8, 2026.
Spider-Man: Brand New Day is directed by Destin Daniel Cretton from a screenplay by Chris McKenna and Erik Sommers. The film stars Tom Holland as Peter Parker/Spider-Man, with Zendaya and Jacob Batalon reprising their roles as MJ Watson and Ned Leeds. Sadie Sink joins the cast alongside Jon Bernthal as Frank Castle (a.k.a. The Punisher) and Mark Ruffalo as Bruce Banner/The Hulk. Liza Colón-Zayas and Tramell Tillman have also been cast in undisclosed roles, while Michael Mando returns as Mac Gargan from Spider-Man: Homecoming and Jones III has been confirmed to play the role of Tombstone. Additionally, Florence Pugh’s Yelena Belova will appear in the movie.
Here’s the new synopsis for Spider-Man: Brand New Day:
After the world has forgotten his name, Peter Parker (Holland) begins a new chapter in his life — balancing college classes, part-time work, and his responsibility as New York’s friendly neighborhood Spider-Man. But when a mysterious force begins to unravel the city from the inside out, Peter finds himself caught between powerful enemies, old legacies, and unexpected allies. As shadows from the past creep into his present, he must redefine what it truly means to be a hero — on his own.
Spider-Man: Brand New Day is scheduled to hit theaters and IMAX on July 31, 2026.
Avengers: Doomsday stars Robert Downey Jr. as Doctor Doom, Paul Rudd as Ant-Man, Simu Liu as Shang-Chi, Tom Hiddleston as Loki, Florence Pugh as Yelena Belova, Danny Ramirez as Falcon, Sebastian Stan as Bucky Barnes, Winston Duke as M’Baku, Chris Hemsworth as Thor, Letitia Wright as Black Panther, Tenoch Huerta Mejía as Namor, Anthony Mackie as Captain America, David Harbour as Red Guardian, Wyatt Russell as U.S. Agent, and Hannah John-Kamen as Ghost. Ian McKellen as Magneto, Patrick Stewart as Professor X, Rebecca Romijn as Mystique, James Marsden as Cyclops, Kelsey Grammer as Beast, Alan Cumming as Nightcrawler, and Channing Tatum as Gambit. Pedro Pascal as Reed Richards (Mr. Fantastic), Vanessa Kirby as Sue Storm (Invisible Woman), Joseph Quinn as Johnny Storm (Human Torch), Ebon Moss-Bachrach as Ben Grimm (The Thing), and Lewis Pullman as Sentry.
Directed by the Russo brothers from a screenplay by their longtime collaborator Stephen McFeely, Avengers: Doomsday is now being co-written by McFeely and Michael Waldron, the creator and head writer of the Loki series.
Avengers: Doomsday will be released in theaters and IMAX across the United States on December 18, 2026.
