NEW YORK — Showtime has signed Wesley Snipes as an executive producer of an original movie called “Down in the Delta.”That’s the word from Jerry Offsay, president of production for Showtime, who also said the network has given the go-ahead to at least two movies that will update the classic CBS series “The Defenders” (1961-65). Showtime has signied E.G. Marshall to reprise his original role as the high-class defense attorney Lawrence Preston, and Beau Bridges to play his son, Don Preston. Bridges succeeds the late Robert Reed. The Snipes project is about a black woman in Chicago who sends her family to live with relatives in Mississippi. The other exec producers are Bob Christiansen, Rick Rosenberg, Reuben Cannon, Victor McGauley and Terry Farnsworth. The “Defenders” movies are from Paramount Network TV. Andy Wolk is writing and directing the first two, “Payback” and “Choices of Evils.” Co-writers include the creator of the original series, Reginald Rose. Showtime also announced three other new movies: “The Fixer,” a drama with Jon Voight as an executive whose midlife crisis puts him in danger of getting murdered. Voight is exec producer with Martin Tudor. The producers: Tony Bill and Helen Bartlett. The writer-director is Charles Carner. “The Spree,” a thriller from MGM TV with Jennifer Beals and Powers Boothe. Executive producers are Marcy Gross, Ann Weston, Albert Berger and Ron Yerxa. Director is Tommy Lee Wallace. “Dogboys,” starring Bryan Brown as a prison guard who uses tracking dogs to hunt down escaping prisoners. Ken Russell will direct for Goodstuff Entertainment.