The Oppenheimer vs Barbie clash on July 21 is on. Amid rumours that the Christopher Nolan film might see a delay, The Wrap, citing a source close to the film, reported that the biographical thriller will not shift dates.

Oppenheimer and Greta Grewig’s Barbie are slated to release on July 21. Cannes director Thierry Fremaux had hinted in an interview that the former will be released later this year.

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In an interview with Variety, Fremaux was asked why they did not include the Murphy-starrer in their line-up this year.

“I would have loved (that]) but it’s being released at the end of the year as part of their awards strategy. My two regrets this year are “Oppenheimer” and “Barbie,” but it won’t be ready either by May,” he said.

Oppenheimer is based on the book ‘American Prometheus’ by Kai Bird and Martin J. Sherwin. The film is told through the eyes of J. Robert Oppenheimer, played by Cillian Murphy. The film is written by Christopher Nolan.

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Social media users were excited after reports came out that the two films will release on the same day.

“STREETS SAYING OPPENHEIMER ISN’T DELAYED. THE BATTLE IS BACK ON,” a Twitter user said.

“if they actually delayed oppenheimer they just lost the chance to forever be remembered as one of the most iconic opening weekends ever,” another one added.

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“OPPENHEIMER isn’t delayed. Having a July release was a prerequisite for Nolan working with Universal. They’ve also *literally* been counting down to the release since last summer’s teaser, they ran ads during the NFL playoffs, Damon says he’s seen it, etc. Much ado about nothing,” a third one tweeted.

While Peaky Blinders star Cillian Murphy plays the titular character, Emily Blunt, Robert Downey Jr, Matt Damon, Florence Pugh, Rami Malek, Benny Safdie, Josh Hartnett, Dane DeHaan, Jack Quaid, Matthew Modine, Alden Ehrenreich, David Krumholtz, Michael Angarano, and Kenneth Branagh appear in other roles.