Emily Blunt is preparing for Steven Spielberg's upcoming sci-fi film Disclosure Day by watching endless documentaries about people who have experienced unexplained phenomena, according to a recent report. The $115 million film, set for a June 12, 2026 worldwide release through Universal Pictures, follows Margaret Fairchild, a Kansas City TV meteorologist who suddenly gains the ability to understand and communicate through an alien language. She teams up with a cybersecurity expert and whistleblower named Daniel Kellner to uncover conspiracies about humanity's relationship with extraterrestrials.

Documentaries as a Springboard: Emily Blunt’s Preparation Strategy

The report notes that Blunt was unnerved by the scope of her character, whom she described as “kaleidoscopic.” With no firsthand reference for the experiences her character undergoes,the actress relied on watching “endless documentaries about people who have experienced something and the reality of what that felt like for them.” This approach allowed her to ground a highly fantastical role in human emotion, even as the exact nature of those documented experiences remains unspecified in the source.

A $115 Million Bet and a 42-Draft Screenplay

Disclosure Day carries a reported budget of $115 million, produced by Spielberg’s Amblin Entertainment. David Koepp, a longtime collaborator of Spielberg, wrote the screenplay—reportedly completing 42 drafts before arriving at the final version. according to the report, Koepp’s inspiration was rekindled by a New York Times article titled “Glowing Auras and ‘Black Money’: The Pentagon’s Mysterious U.F.O. program” and the release of the Fravor footage. This suggests the film is consciously tapping into real-world Pentagon disclosure debates.

Spielberg’s Pentagon Connection and His Belief in Alien Visitation

Spielberg himself has gone on the record to state that he “absolutely believes that aliens have visited Earth,” as the source reports. This personal conviction, combined with the real-world Pentagon whistleblower context, gives Disclosure Day a documentary-inflected credibility that sets it apart from purely fantastical alien films. The director’s own sense of disclosure—mirroring the film’s title—appears to be a driving force behind the project.

What’s Still Unclear About Disclosure Day’s Plot and Cast

While the report names a star-studded cast including Josh O’Connor, Colin Firth, Eve Hewson, Colman Domingo, and Wyatt Russell, it does not sepcify which actor plays the key whistleblower role of Daniel Kellner.. This omission raises questions about whether a high-profile performer is being kept under wraps. Additionally, the source does not desribe the nature of the alien language or how Blunt’s character acquires her ability—details that could determine the film’s narrative logic . These gaps leave room for speculation about potential surprises in casting and storytelling.