The Wakanda Files: A Technological Exploration of the Avengers and Beyond is an in-universe text written by Shuri, which goes into various details surrounding fan-favorite MCU characters.
Some information has already been uncovered from the book, such as Shuri believing that Iron Man 3's Extremis "has potential." The book also revealed that Black Widow may be more deadly than previously thought, with her choosing to hold back when using her 'Widow's Bite' gauntlets.
Ever since Disney's acquisition of Fox, fans have wondered when and how mutants would make their way over to the MCU, such as if WandaVision would be a backdoor for the X-Men to make some sort of appearance. With WandaVision rumored to be potentially introducing the multiverse, perhaps this could allow mutants to start popping up in the MCU going forward.
The Wakanda Files now appears to suggest, though, that mutants have been in the MCU all along...
As reported by ScreenRant, an excerpt from The Wakanda Files hints that Scarlet Witch and Quicksilver have a potential mutant connection.
The book notes that HYDRA chose Sokovia specifically as many of its citizens possessed "genetic anomalies," making Sokovians the perfect candidates to be tested on with Loki's scepter and the Mind Stone. The reference to "genetic anomalies" potentially hints that Wanda and Pietro Maximoff are mutants.
An extract from the book describes the effect that the Mind Stone had on Wanda's body, which seems to suggest that exposure to Loki's scepter awakened her mutant abilities:
"The Stone similarly transformed her nervous system, but it has ionized and charged it in ways that have given her an extraordinary ability. Neural-electric interfacing allows her to create bursts of extreme energy using only her mind and the tips of her fingers. The manipulation of this energy permits her short bursts of levitation, in addition to a staggering weapon that only requires her bare hands."
Another part of the book describes the sheer power that Wanda was given, possibly hinting at how her powers will develop in upcoming appearances:
"What is beguiling is how Wanda's nervous system has also unlocked potential for telekinesis. These are not parlor tricks; she is not just bending spoons. She can manipulate minds and plant suggestive thoughts, even enhance preexisting paranoias. She can see into the mind of a human, find out what they fear and what will motivate them."
WHAT THIS MEANS
ScreenRant themselves noted that the Maximoff twins' mutant powers have been hinted at previously. The Marvel Studios Visual Dictionary indicated that their powers may have been latent until they were unlocked by the power of the Mind Stone.
These two instances are almost certainly not a coincidence and could indicate that Marvel Studios is making moves to reinstate Wanda's mutant status, now with the Fox catalog safely under their belt. Whether this will be directly addressed in the MCU itself is yet to be seen, but a possible appearance from Evan Peters could indicate that WandaVision may choose to address the lingering mutant in the room.
It is interesting to know that mutants may have existed in the MCU for all of this time and that fans, and Wanda herself, were none the wiser. Perhaps this may affect future Inhuman characters and how they will be portrayed. With the Inhumans brand somewhat besmirched by its previous television efforts, there may be a possibility of Ms. Marvel instead being reinterpreted as a mutant character. However, Marvel does have its hands full with all of its other upcoming properties, so there is a good chance that it may be a while before the X-Men make their triumphant return to the MCU.
Scarlet Witch will next appear in WandaVision, which may illuminate the mysteries surrounding her mutant origin.