Shortly after at Disney's Investor Day, Feige revealed the film's title as Ant-Man and the Wasp: Quantumania, confirmed the return of Rudd, Lilly, Douglas, and Pfeiffer, alongside Majors as Kang, and revealed that had joined the film as Reed added that he and were hopeful about a third film and had discussed potential story points for such a sequel
Rudd was set to star as Lang, with Lilly and Douglas also returning The film was previously set to be released in 2022

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This news came after against Harris and his wife arose at the end of February, but reported that this was unrelated and Harris was never set to return for the sequel.

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At the beginning of March, was revealed to not be returning as his character from the first two Ant-Man films
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It was then expected to take place between May 31 and September 24
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Later that month, Loveness revealed that he had turned in the first draft of the script, and said Marvel had used the COVID-19 pandemic break to "do something new and weird" with the film
Because the actor cast as Kang would first portray an alternate version of the character, named , in the series , and —the director and of Loki 's first season, respectively—were involved in casting Majors in addition to Reed and executives at Marvel Studios The film is directed by from a screenplay by , and stars as and as , alongside , , , and
At that point, it was no longer clear when production would begin on the film due to the effects of the pandemic on all film productions Rudd had begun filming scenes by June 15 at in , using the Dust Bunny, while Douglas headed to England for filming at that time

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In December, Pfeiffer confirmed her involvement and that filming would begin in mid-2021
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Filming in Turkey began in early February 2021, while had begun by mid-June at in and in , and will last until 2022
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Ant-Man and the Wasp: Quantumania is scheduled to be released in the United States on February 17, 2023, as part of of the MCU
In July, Joanna Robinson of reported that would reprise his role as from Ant-Man in "some shape" for Quantumania Loveness was hired by April 2020, with development on the film beginning during the
Shooting to capture exterior shots and background plates took place at the in on June 19 and 20, with filming of the station's interior, the outward view of the building, and Pfeiffer and Douglas both indicated that the film would be released in 2022

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Will Htay served as production designer.

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In August 2020, Reed confirmed that development on the film was continuing during the pandemic
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The film's title and new cast members were announced in December 2020
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In early May 2021, Marvel Studios announced that the film would be released on February 17, 2023