David Benioff and Dan Weiss have signed up to produce a "new series" of Star Wars films. They will start work on the project as soon as work on the final season of Game of Thrones wraps later this year.
Disney have confirmed that the new movies will not be related to the core Skyalker saga (which will end with Star Wars: Episode IX in 2019), nor to Rian Johnson's in-development trilogy.
The news seemingly confirms that HBO's Confederate, an alternate-history story about the South winning the American Civil War which Benioff and Weiss had been tapped to helm immediately after Thrones, is now on indefinite hold.
This news also seemingly confirms that Disney are going to be aiming to release multiple Star Wars movies per year, like their Marvel franchise. Assuming the Benioff & Weiss movies will alternate with Johnson's, this means that the further Star Wars Story stand-alone movies (including an in-development movie focusing on Obi-Wan Kenobi between the first two trilogies) will now be sharing release years with these new trilogies.