For fans of Coke Zero, the end is nigh. Sort of. Coca-Cola has announced plans to reinvent the popular fizzy drink with a new recipe, design and name: Coke Zero Sugar.

With low-calorie and no-sugar beverages flooding the market, the rollout is not entirely surprising. Coke Zero Sugar was introduced in 25 different countries last year, including Great Britain and Mexico. The new recipe contains zero sugar and calories, and it has the same caffeine content as Coke Zero, according to the soda titan.

“We’re confident our new and improved Coke Zero Sugar recipe delivers a great taste that Coke Zero fans in the U.S. will love,” said the company in a statement. “We’ve made the great taste of Coke Zero even better by optimizing the unique blend of flavors that gave Coke Zero its real Coca-Cola taste."

Coca-Cola's words, however, did little to assuage Coke Zero fans' concerns. Within hours, many had hit up Twitter to make their feelings known.

Coca-Cola claims consumer reactions to the new drink have been "overwhelmingly positive" during the past 12 months. It also says confusion around the name and design — which is strikingly similar to "normal" Coke — has been minimal.

How do you feel about the change? Let us know your thoughts in the comments.

Staying with Coca-Cola, Ronnie Fieg recently teased his upcoming collaboration with the soda giant.