Here come the mid-calorie drinks.  You may remember we were pretty happy with Dr. Pepper 10, a soda with 10 calories per 12 ounce serving.  Pepsi’s take on the mid calorie concept is to split the diet/regular dichotomy right down the middle, with a  half the calories of a Pepsi.  National distribution starts March 26, though you may be able to check it out now.