The reason her name wasn’t on the cast list: she hadn’t signed her deal by the time the studio wanted the news to go out today via StarWars.com. Deadline hears though that she has now officially inked for the unknown role, and that she will be in the finale of the Skywalker Saga movies that has a December 20, 2019 release date.
The casting reunites Russell and Star Wars director and co-writer J.J. Abrams, who created her series Felicity, which ran from 1998-2002. Russell and Abrams also worked together on Mission: Impossible III. Abrams co-wrote the Episode IX script with Chris Terrio.
Russell recently wrapped on the sixth and final season of FX’s Americans.
The main cast of the Episode IX now: Daisy Ridley, Adam Driver, John Boyega, Oscar Isaac, Lupita Nyong’o, Domhnall Gleeson, Kelly Marie Tran, Joonas Suotamo, Billie Lourd, Mark Hamill, Anthony Daniels, Billy Dee Williams, Naomi Ackie and Richard E. Grant, with Carrie Fisher appearing as Leia Organa via unused footage from The Force Awakens.
Source: https://deadline.com/