Lot's of rumours going on:
1. The english voice actor for Krillin made a short about how he recently voiced 3 characters for a video game and emphasized how he did lot's of screaming and if you look at his history as a voice actor, basically only franchise that is left- getting dubbed in english he does recording for is Dragonball, so since he is the voice actor for Krillin, Bardock and General Blue from classic Dragonball, that could mean the Character Roster is going to be bigger than expected.
2. A Youtuber named "Geekdom101" with over 700.000 subscribers, made a video about how some trustful sources/contracts told him there will be characters from the tournament of power playable- which never have been playabale in a major- console game before, also he said the character roster will be greater than that of Xenoverse 2 with all DLC included.
Man, hopefully they gonna drop something at Gamescom lol, it's been 5 months since that little teaser has been dropped after all.
@TheAncientCenturion