With Avengers: Doomsday and Avengers: Secret Wars being pushed to December 2026 and December 2027 respectively, MCU fans have been speculating about the mystery film originally slated for July 23, 2027.
If Marvel keeps this date, it'll become the sole MCU release between the two Avengers films, following Spider-Man: Brand New Day on July 31, 2026.
The fan theories are running wild. "Doctor Strange 3 seems the obvious choice," commented one Redditor on r/MarvelStudiosSpoilers, adding "though there's a slim chance we might see the MCU X-Men debut here, depending how the Fox characters appear in Doomsday."
Many seem convinced Doctor Strange will claim this spot. One Twitter user suggested: "Probably Doctor Strange 3... Though I'd personally prefer Shang-Chi 2," while another joked: "What if Dr. Strange III becomes World War Hulk?" Interesting idea, but probably unlikely.
"Doctor Strange 3 makes the most sense between these Avengers films. Blade's definitely getting postponed past Secret Wars," argued a Redditor, though someone countered strongly: "Actually Black Panther 3 is more likely - Marvel and Coogler have openly discussed it. It should be his next project."
Several fans noticed Black Panther 3 wasn't getting enough attention, especially after Sinners performed so well. "Why is everyone assuming Doctor Strange 3 when there's zero official word?" questioned a commenter. "Black Panther 3 has actual momentum behind it."
The BP3 supporters made compelling points. "It's further along in development than anything else," observed one Redditor. Another noted: "Nate Moore said he'd produce BP3 before leaving Marvel, and Denzel Washington mentioned they wrote a role for him," though someone countered: "Moore already left Marvel - he's joining Survivor next season. He'll return for BP3 but isn't sticking around until release."

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Some diehards still cling to hope for Blade, despite its troubled development. "Maybe Blade was secretly filmed," one fan speculated, while another laughed: "Could it actually be Blade? Yeah right." However, someone reasonably pointed out: "Whatever fills this slot needs to bridge the Avengers stories - Blade wouldn't serve that purpose."
"Blade would be amazing but isn't happening," a Twitter user conceded before proposing: "Maybe a Young Avengers movie? (Though it'd probably be a series)." Another suggested: "A Midnight Sons team-up featuring Blade and Ghost Rider, set in Battleworld - that could work."
The boldest theories? Spider-Man stealing the spotlight. "Sony will claim this date for Brand New Day," predicted one fan, with another stating definitively: "They'll simply move Spider-Man here."
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