According to their sources (probably not The Force), Variety is reporting that an actor most well-known for appearing in a different science-fiction property will be appearing in the next saga Star Wars film, Episode IX. That person, Matt Smith, played the Eleventh Doctor in Doctor Who, from 2010 to 2013 (with cameos afterwards).
While nothing is known about who or what he will play (Good? Bad? Guy with a screwdriver?), it is being reported as being a "key" role. Well, we'll find out in time. Star Wars: Episode IX travels to theaters December 20, 2019.