According to Variety, Universal is moving ahead with its fourth installment of "The Bourne Identity" franchise, with George Nolfi writing the script.
Nolfi was co-writer of the third film, which was based on a story by Tony Gilroy.
Though the series is based on the Robert Ludlum novels, the new film won't be based on a Ludlum title, but rather an original story.
Director Paul Greengrass and star Matt Damon are attached to the new film.
-------------------------------------
While the movies were good, I'd actually say they were loosely based on Ludlum's novels.