PepsiCo announced that it is to launch a vanilla version of its flagship brand as it unveiled its plans for its annual summer battle with rival Coca-Cola. It had been widely speculated that Pepsi would look to emulate the success of Vanilla Coke, which launched last year and has sold 90m cases, and yesterday the Purchase, NY, food and beverage company confirmed it will introduce Pepsi Vanilla late this summer. No specific launch date was announced.