The Instagram account, enigmatically named @wponx (as in, Weapon X), posted an image of Dafne Keane, the actress who plays the character, with the caption 'Laura'. In the comics, X-23 is a girl named Laura Kinney, and the clone daughter of Logan from the Weapon X programme hoping to replicate Wolverine's regenerative powers and super strength. She is the 23rd attempt to make such a clone, hence the name. She is a relatively new character, first appearing in 2004, and has since appeared as part of the X-Force team.
Mangold heavily hinted that would be the case during his interview with Empire magazine. "I think I will just let speculation run rampant about that. I think what this film is about in many ways is family. From there out I'd let everyone figure out what we're up to on their own, at least at this early stage."
Hugh Jackman is set to appear for the very last time as arguably the most iconic member of the X-Men for the third Wolverine solo movie, and so we are expecting big things from his swan song in the role.
Boyd Holbrook (Gone Girl) is the main villain, while Richard E. Grant (Dom Hemingway) plays a mad scientist and Stephen Merchant (I Give It A Year), Eriq La Salle (ER), Elise Neal (Hustle & Flow) and Elizabeth Rodriguez (Fear The Walking Dead) are also on board.
Logan will arrive in UK cinemas on 3 March next year.