Does Andrew Morton know where to stop? The British author is still being pilloried for his controversial timely update to the best-selling "Diana, Her True Story," and it was reported Monday that Harrods owner Mohammed Al Fayed had banned the book from his store. Now PEOPLE Daily reports exclusively that Morton's revised biography is set to become a major motion picture, to be released worldwide next year. American producer Martin Poll, who made the 1993 "Diana: Her True Story" miniseries based on Morton's first draft, tells PEOPLE that filming will commence in March. One snag: Since the Morton update is titled "In Her Own Words," Poll might have trouble finding a more appropriate, inoffensive and snappy name for the movie.