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Probably means we're going to get more Vision as well. Remember, he is back and out there somewhere.

Ok, so the theory is that Wanda, not our Wanda, has already said "No More Mutants". That may be what Xavier is referring to in the trailer when he says, "I think we should tell him the truth." If you don't get it yet, Wanda is CRAZY powerful. When she utters those words in the book, Strange is absolutely incapable of just reversing or breaking her spell. He states that it actually affected other worlds and dimensions...you know, like a multiverse... If you also don't know, Wanda and Quicksilver ARE mutants (Also, if you don't know, their daddy is Magneto.), but that has not been said or explained in the MCU yet. To this point they were described as being the results of experiments, however Wanda's abilities are clearly surpassing anything from that experiment. As Agatha said to her in Wandavision, "You're supposed to be a myth." Anyway, the theory is that another universe's Wanda already lived the "House of M" storyline and has said the words, which took away the mutants from the MCU. Mutants' history runs all the way back through creation, so their absence is a problem. A problem that would be easily solved by a spell finally getting broken that would show they've actually been here the whole time. I know, that might sound crazy. I mean, the MCU would never show a spell being capable of making everyone in multiple dimensions remember or forget something like a person existing...you know, like they JUST DID in SM:NWH. We all know mutants are coming to the MCU, this is just a theory on how that could happen within the next movie and it would make a lot of sense based on the story they've told to date. FYI, I'm thinking plain clothes Wanda from the trailer is the "big bad" in the movie and likely the one who uttered the words if this theory is correct. Excelsior!

Yeah, the rumor is he'll be playing "Superior Iron Man", a member of the Illuminati. Their job is to watch over the multiverse and the speculation is that those chairs you see in the trailer is their meeting place. The breakdowns of that Strange trailer seem to agree T'Challa is sitting there (no idea who the actor/actress will be, but it's highly doubtful Boseman filmed the scene before his death) and Stewart's Xavier. Superior Iron Man is speculated because his Ultron is a success and those are Ultrons escorting Strange in the trailer. Plus, people think that's him fighting Wanda in the trailer or Monica Rambeau (Photon). Will Reed Richards (Mr. Fantastic), Namor (Marvel's Aquaman), Blackbolt (the leader of The Immortals), or anyone else be up there? There are 6 chairs... I do know that the shape sitting to the right of Xavier (from our view facing them) sure as hell looks like Dr. Doom...