There has been quite a lot of mention of Phase 4 and what it will represent for the Marvel Cinematic Universe moving forward. Ever since the addition of new movies in the slate, such as Ant-Man and the Wasp: Quantumania, and release delays due to the ongoing pandemic, Phase 4 has been very ill-defined by Marvel Studios and Kevin Feige. Fans are still unsure if Captain Marvel 2 or Black Panther 2 are part of Phase 4 either.
After critics and outlets were allowed to view the first three episodes of WandaVision and give their impressions of the show, they participated in a press junket with the cast and crew. Charles Murphy of Murphy's Multiverse was given the opportunity to ask Kevin Feige a question during the online press junket regarding clarification on Phase 4.
Charles Murphy asked Kevin Feige for clarification on when exactly Phase 4 of the MCU would end, with Feige giving a very curt “No” in response:
WHAT THIS MEANS
The only time that Kevin Feige has ever been completely forward with defining Phase 4 was shortly after the bombastic announcement of its Phase 4 slate at San Diego Comic-Con in 2019.
During this panel in Hall H, it was seemingly announced that Black Widow, The Falcon and the Winter Soldier, Eternals, Shang-Chi and the Legend of the Ten Rings, WandaVision, Doctor Strange in the Multiverse of Madness, Loki, What If...?, Hawkeye, and Thor: Love and Thunder would be part of Phase 4 of the MCU.
In a short interview with Collider, when asked about the state of Phase 4 for the MCU, Kevin Feige said that what was announced was “the complete Phase 4 the way I announced the complete Phase 3 five years ago.” When asked about whether Blade was part of Phase 4, Feige confirmed that it was not.
It's interesting how Feige mentioned “the way I announced the complete Phase 3 five years ago” as much changed about that announcement with the removal of Inhumans and the addition of Spider-Man: Homecoming and Ant-Man and the Wasp. So, it's entirely likely since that announcement of Phase 4 over a year ago much could have changed in what is or is not included in it.
All fans really have to go off in terms of facts is that Blade is not part of Phase 4, which likely means that neither is Captain Marvel 2 or Black Panther 2, as Blade is seemingly wedged in-between those two movies.