Kraft Foods, Northfield, IL, has ex­panded its alliance with The South Beach Diet and its creator, Dr. Arthur Agatston, by launching a broad line of new products under the South Beach Diet brand. The wide variety of products, including choices for breakfast, lunch and dinner, as well as snacking, will reach national distribution in the spring. The South Beach Diet line will include cereal, meal replacement and cereal bars, refrigerated sandwich wraps, frozen entrees and frozen pizza.