There is a second pack that is announced for the Dragon Ball Xenoverse 2, but as of this time, there are no details released yet. However, there are Universe 6 characters that are to be included. The latest Japaneses V-jump magazine issue made revelations about few details of this second DLC pack for Dragon Ball Xenoverse 2.
Champa is one of the new characters that were added to the roster, and he is the God of Destruction in Universe 6 and is the fatter brother of Beerus. He is not portrayed as an evil character, but he is seen as more concerned for food more than anything in Dragon Ball Super.
Vados is also one of the other playable character in the latest DLC. She assists Champa, and is a powerful angel-like character. She is also a sister of Whis, and she is also one of the most powerful characters for the whole Dragon Ball universe. Omni King Zeno is the most powerful in the Universe since he is capable of destroying the entire Universe through his bare bones only.
There will also be new attacks, skills, and other features to be added. As of now, details are not yet disclosed thus fans have to wait for the revelation of these information. The DLC's release date has not been discussed yet, but it will hopefully come out around January.
The addition of Vados and Champa will be added to Dragon Ball Xenoverse 2 would mean that there will only be two more characters in the Universe 6 that is left to be added on it. Magetta and Botamo will still be needed for the game. These two characters were last seen in the Dragon Ball Super last week while trying and playing basketball, as reported by Attack of the Fan Boy.
Bandai Namco might be adding more DLC packs for the game within the entire year in 2017. They have mentioned plans for support of the game for a long period of time which is why they are not developing a third game yet.