http://www.thewrap.com/star-wars-2nd-anthology-film-will-be-boba-fetts-origin-story/
This is the movie Josh Trank was going to direct.
Also, last year there was a rumor about what the basis for this film would be (thread).
Some thoughts from Devin Faraci (apparently he moved his site from Badass Digest to this new domain).
The next “Star Wars” anthology movie due in 2018 that recently lost director Josh Trank will be a Boba Fett origin story, confirming one of many rumors that have appeared online in the last several months, TheWrap has learned.
Writer-producer Simon Kinberg has been closely involved in the creative process for the second anthology film, which is set in a separate movie universe that is not associated with “Star Wars: The Force Awakens” or upcoming Episodes VIII and IX.
This is the movie Josh Trank was going to direct.
Also, last year there was a rumor about what the basis for this film would be (thread).
Some thoughts from Devin Faraci (apparently he moved his site from Badass Digest to this new domain).