Marvel Studios is currently working on several upcoming feature films in their slate with confirmed release dates already scheduled up until July 2023. However, as we are still dealing with the COVID-19 pandemic that has resulted in production delays and scheduling shuffles, the line-up has been subjected to several changes and now it looks like there is another new switcheroo in the MCU slate next year.
According to Deadline, Disney and Marvel have announced that they are swapping the release dates of The Marvels and Ant-Man and the Wasp: Quantumania next year. The Marvels has been bumped to July 28, 2023 while Ant-Man and the Wasp: Quantumania will be released earlier than expected on February 17, 2023.
While production for both films is going smoothly, Ant-Man and the Wasp: Quantumania was further along in the process which is why the studio decided to swap their release dates. Meanwhile, Guardians of the Galaxy Vol. 3 is still retaining its May 5, 2023 release date as its production is set to wrap very soon.
These release date changes have been pretty much a norm this pandemic so it's not surprising that this is happening. In addition, it also has something to do with the production process which is why decided to make the change and it doesn't have something to do with the pandemic itself.
This is also a sign that the plot for both films doesn't interconnect with each other given that they were willing to swap their release dates without any consideration of whether it will affect the overall arc of the MCU. In the end, the changes were not significantly larger as they're both still part of 2023 and there is a possibility that these would be the last changes for them.
As for the 2022 slate, the dates are remaining intact with Doctor Strange in the Multiverse of Madness still set for release next week, Thor: Love and Thunder on July 8, and Black Panther: Wakanda Forever on November 11.