McDonald’s menu just expanded with the introduction of its new Premium Buttermilk Crispy Chicken Deluxe Sandwich. The sandwich is a tender filet made with 100% chicken breast, real buttermilk and no artificial colors — with fresh tomato, crisp leaf lettuce and mayonnaise on an artisan roll. If that’s not enough to entice you to try it, you can also get a FREE medium drink with the purchase of the new sandwich today, Friday, September 4 to Sunday, September 6 at participating locations. The offer also applies to the purchase of any Buttermilk Crispy Chicken menu item, including a McWrap or Premium Salad. (Remember, if you dine in, soft drink refills are FREE — at most locations.)