Coca-Cola Co. (KO), struggling to boost sluggish soft drink sales in North America, Monday said it will launch a version of Diet Coke sweetened with Splenda (search) in the United States later this year.

Diet Coke (search) Sweetened with Splenda will contain a blend of the artificial sweeteners Splenda and acesulfame potassium, the world's largest soft drink maker said in a press release.

The Atlanta-based company said its regular Diet Coke drink, the leading diet soft drink in the nation, would continue to be sold.

"The millions of current Diet Coke devotees across America shouldn't be concerned -- the Diet Coke they love will stay just as it is," said Dan Dillon, vice president of the Diet Coke brand in North America.

The rollout is part of a flurry of new drinks being launched by Coca-Cola in the U.S. market this year. The new offerings include a lime-flavored version of the flagship Coca-Cola brand and an energy drink called Full Throttle.

Shares of Coca-Cola were up one penny at $42.48 on the New York Stock Exchange (search).