Boyle declined to comment. It not the first time the production — referred to as “Bond 25” for its position as the 25th movie in the franchise by the producers’ count — has experienced personnel changes, though. The screenwriters Neal Purvis and Robert Wade, who worked on the last six Bond films, were originally set to write “Bond 25” as well, but when Mr. Boyle signed on as director it was announced he would work on the script with John Hodge, a longtime collaborator.