Here's a youtube link of the guy going through the ID data if you want to see for yourself, but the apparent DLC roster is:
Seto Kaiba (Yu-Gi-Oh!)
Toshiro Hitsugaya (Bleach)
Grimmjow Jaegerjaquez (Bleach)
All Might (My Hero Academia)
Katsugi Bakugo (My Hero Academia)
Biscuit Krueger (Hunter X Hunter)
Buu (Dragon Ball)
Madara Uchiha (Naruto)
Trafalgar Law (One Piece)
So, no new series, 1/3 of the DLC is more D.O.N. reps, and with only 9 spots Bleach and MHA take two each. I'm a bit torn on this. On the one hand it's a pretty piss poor representation of Jump as a whole that so many series are being completely ignored while ones that are already over-repped are getting even more. But on the other hand Grimmjow, Kaiba, All Might, and Law are some pretty damn solid choices nonetheless.