There seems to be some confusion about whether 'The New Mutants' is in fact a thirteenth 'X-Men' movie. Based on the facts, it contains characters from the 'X-Men' universe and is based on comic book stories attached to the 'X-Men' world, so we'd have to say that it is. Much like her 'Game of Thrones' sister Sophie Turner appears in 'Dark Phoenix', Maisie Williams has bagged herself the lead role in this one. We have to assume that was a deliberate bit of casting!
Williams appears as Wolfsbane, a deeply religious Scottish girl trying to reconcile her beliefs with the fact that she sometimes turns into a werewolf. That can't be an easy mental process. Pitched as a 'Breakfast Club movie with mutants in it', if all goes well this will be the first of a potential trilogy of connected films, thus expanding the 'X-Men' universe even farther on screen. August 2nd is the date to watch out for.