“Doctor Who” Star Matt Smith Joining “Star Wars: Episode IX” Star Wars: Episode IX began filming earlier this month. Variety recently reported that former “Doctor Who” star, Matt Smith, has joined the cast. The only detail that has currently been reported is that Smith’s character has a “key role” in the upcoming film. In addition to his multi-year run as the Eleventh Doctor on BBC’s “Doctor Who,” Smith also earned an Emmy nomination for his acting in “The Crown.” Star Wars: Episode IX is scheduled to be released in December 2019.