Take a look at at the writing credits of any blockbuster, and the list of writers who had their hands in it can look like a revolving door of Who's Who in Hollywood. Using multiple writers at different points is just often part of the process, and the same holds true for upcoming Star Wars: Episode VII — The Force Awakens.
THR is reporting that writer is exiting the Star Wars franchise, and the writing duties are being taken over by director and original Star Wars trilogy writer .
Lucasfilm President Kathleen Kennedy is thrilled to have Kasdan on board, saying in a statement to StarWars.com that
I am very excited about the story we have in place and thrilled to have Larry and J.J. working on the script. There are very few people who fundamentally understand the way a Star Wars story works like Larry, and it is nothing short of incredible to have him even more deeply involved in its return to the big screen. J.J. of course is an incredible storyteller in his own right. Michael Arndt has done a terrific job bringing us to this point and we have an amazing filmmaking and design team in place already prepping for production.
It is unclear whether this was a planned exit for Arndt or a recent decision on the part of the studio.
Star Wars: Episode VII is set for a 2015 release.