The multiverse of Madness series features a variety of developments and revelations that might result in the MCU, but perhaps the most mind-blowing is the film explanation for dreams. The film opening confirms that the characters dreams are actually multiversal visions in which they experience the life of a variant from another universe.
After seeing Doctor Strange 2, remember when Tony Stark (Robert Downey Jr.) told Pepper (Gwyneth Paltrow) about his desire of them having a daughter called Morgan together? Now we know that he had a vision of a reality in which Morgan was born earlier in the timeline. He even said how it felt so real.
The Redditor whiskey_wizard has been credited for pointing this one out, with their post on the MarvelStudios subreddit allowing fans to realize that there are a lot of dream sequences in the MCU that we can now see through a different lens.
Wandas'' illusions that she wore in Avengers: Age of Ultron might retroactively be interpreted as her briefly sending the heroes on a dreamwalk.
Others are being party-poopers, and they are pointing out that the multiverse may be only created after Sylvie killed He Who in Loki. However, there is a lot of confusion about the differences between alternate timelines and multiverses, thus this may not be the case.
Tony''s bizarrely accurate prophetic dream sounded a little pardon the pun peculiar as the reason behind his suddenly ability to peer into the future went unexplained. So the revelation about dreams in Multiverse of Madness actually helps us make much more sense of it. As it progresses, however, the MCU is especially pleasing when a new development actually improves the appearance of things.