The Coca-Cola Co.’s Diet Coke brand launched a limited-edition can design. The latest evolution of Diet Coke’s “Stay Extraordinary” campaign features a modern aluminum can design for fall. The new can design spotlights a section of the Diet Coke logo, which is cropped to show the “D” in Diet and “k” in Coke. The design is set against the brand’s signature silver backdrop. San Francisco-based Turner Duckworth design agency created the design. The new can and packaging design for Diet Coke will be available through November, which is when the brand’s holiday-themed cans will launch.