What is new prime flavor yellow?

As an AI language model, I don't have information about specific products unless it has been released in the news or media. However, if you are referring to Prime Flavors, it is a manufacturer of flavorings for e-liquids used in electronic cigarettes. They produce a wide range of flavors, including fruity, dessert, and tobacco flavors. So, it's possible they may have recently released a new yellow flavor, but without additional details, I cannot provide specific information about it.