Diet Coke
Diet Coke does not use a modified form of the Coca-Cola recipe, but instead an entirely different formula. The controversial New Coke, introduced in 1985, used a version of the Diet Coke recipe that contained high fructose corn syrup and had a slightly different balance of ingredients. In 2004, Coca-Cola introduced Coca-Cola C2, which it claims tastes much closer to Coca-Cola but contains half the carbohydrates. In 2005, the company introduced Coca-Cola Zero (replaced by "Coca-Cola Zero Sugar" in 2017), a sugar-free variation of regular Coca-Cola.
New Coke
The 20 bottlers still suing Coca-Cola made much of the change in their legal arguments. Coca-Cola had argued in its defense when the suit was originally filed that the formula's uniqueness and difference from Diet Coke justified different pricing policies from the latter – but if the new formula was simply an HFCS-sweetened Diet Coke, Coca-Cola could not argue the formula was unique. Bottlers, particularly in the South, were also tired of facing personal opprobrium over the change. Many reported that some acquaintances and even friends and relatives had ostracized them, or had expressed displeasure in other emotionally hurtful ways. On June 23, several of the bottlers took these complaints to Coca-Cola executives in a private meeting. With the company now fearing boycotts not only from its consumers but its bottlers, talks about reintroducing the old formula moved from "if" to "when".