Lucasfilm made an official statement that 3 years before the movie premiere Episode VII begins pre-production. Also they officially confirmed that Michael Arndt will write the story.
As pre-production of Star Wars: Episode VII begins, Lucasfilm has confirmed that award-winning writer Michael Arndt will write the screenplay for the new Star Wars film. Kathleen Kennedy and George Lucas have begun story conferences with Arndt. Arndt won an Academy Award® for Best Original Screenplay for writing Little Miss Sunshine (2006), and was nominated for Best Adapted Screenplay for writing Toy Story 3 (2010).