Only Coke products are sold on Disney property. From water to lemonade. Unless something really major happens in the next 50 years, I don't think that is going to change.
From wikipedia:
Mr. PiBB was introduced in July 1971 to compete against Dr Pepper and has a very similar taste, but was sweeter and not as sharp as Dr Pepper.[citation needed]
In 2001, a new flavor called Pibb Xtra was introduced with added cinnamon and cherry flavor, replacing the original flavor in many parts of the U.S. Some regions had both variations for sale at the same time.
There is currently an online petition to bring back the old version, Mr. PiBB, to areas that no longer receive shipments of Mr. PiBB, but rather Pibb Xtra. This petition has around 1800 signatures.[1]
The soda has a small but loyal following in many parts of the United States, especially the South. A diet version was also available into the 1990s in some markets, notably Texas. Some cans were uniquely shaped. Instead of the traditional cylinder, the can had faceted sides.
Mr PiBB's slogan in the late 1990s was "Put it in your head", and the can featured an odd cartoon head drawn in a squiggly scribble style.
In 2005, the Coca-Cola Company introduced Pibb Zero, a sugar-free version of Pibb Xtra, in Texas, Georgia, Kansas (except for areas around Wichita and Hutchinson, and the northwestern portion of the state), Oklahoma, Missouri, Chicago and parts of the Midwest. The Coca-Cola Company reports that there are no plans to introduce Pibb Zero to the rest of the US.[