OK, so I've just seen the roadmap... lot of people are going around reddit boasting about free updates and such in a classic manner of high expectations.
But officialy, the free update just states "Survival Mode". I already got bored from Mission 100, ending myself on 92 missions
So waiting till spring, I expect it to drop around April.
That long awaited DLC won't drop before summer (yahoo, let's wait for half a year!) and that's what will include 9 DLC characters:
Super Saiyan Bardock, Demon King Piccolo, Super Android 17, Grandpa Gohan, Devilman, Champa, Zangya, Tao Pai Pai and Pikkon.
+ some costumes and stages that fans requested.
Nothing else outside of that, altho sugercoated in marketing: "We wanted to deliver Dragon Ball experience beyond just the characters, blah blah blah..." hence it will be the survival, costumes and stages, not expecting much.
But wasn't there a teaser in V-jump, showing completely different mode than Survival? Beside that one double attack from Broly movie (still wonder if one-off, or they did quite an extensive update for more moments).