Kraft is reformulating several versions of Kool-Aid and adding one new one. It's adding the antioxidant vitamin E to its sugar-sweetened Kool-Aid formula to make it more nutritional. Sugar-free Kool-Aid has been changed to taste more like the original sugar-sweetened version. Kraft also changed its singles packs so only one packet goes into a glass of water instead of two. It's also launching a new Kool-Aid water beverage. Kraft hopes the changes will help revitalize the Kool-Aid brand.