It’s unclear why Coke Zero will be different from Diet Coke or Coke C2.
Well, the obvious answer is that C2 is not a zero-calorie soda; it’s just half the calories of regular Coke. Diet Coke doesn’t taste anything like Coke. So, the moral of the story is that a “diet Coke” that tastes like real Coke would be worth having; according to Coke’s press release, that’s the plan:
“Coca-Cola Zero is exactly what young adults told us they wanted – real Coca-Cola taste, zero calories and a new brand they can call their own,” said Dan Dillon, vice president, Diet Portfolio, Coca-Cola North America. “Young people today do not want to compromise on flavor or calories and we think Coca-Cola Zero’s taste and personality will appeal to them.”
There’s a product website here, of course.