https://wccftech.com/dragon-ball-z-kakarot-first-dlc-details/

The first details on the first Dragon Ball Z: Kakarot DLC pack have been revealed today, and they hint that characters and locations from Dragon Ball Super may also be included.

The latest issue of Japanese magazine V-Jump confirmed a little bit of backstory for the upcoming DLC. According to the magazine, humans have been turned into animals by a drug, and they are unable to turn back into humans due to the drug itself. Even the king of the world has been turned into a dog.