STORY: How Writers Lawrence Kasdan and Simon Kinberg Will Expand the 'Star Wars' Galaxy

In April, Abrams had indicated that he wanted the composer to return to score his film, but cautioned that it was still in the "early days." The Star Wars website posted an interview (watch below) where Williams explains how he'll score the latest film.

"Of course, I haven't seen the script," the composer says in the clip. "The story is still unknown to me, the new story. But I can't imagine that there will not be some references to the existing stories that we know that would necessitate, and make appropriate, the use of some of the earlier themes."

The Episode VII script will be penned by Michael Arndt (Toy Story 3, Little Miss Sunshine) and is set to hit theaters in 2015, with Episode VIII and IX scheduled in the years after. Original trilogy stars Mark Hamill, Carrie Fisher and Harrison Ford are expected to appear in the film.

In addition, THR reported that Lawrence Kasdan, writer of Empire Strikes Back, and Simon Kinberg, who penned X-Men: Days of Future Past, are writing separate spinoff projects set in the Star Wars universe.