Patience, they will be in the game. It'd be stupid for them not to be. CC2 did say NUNS3 will have the biggest roster so far. Releasing too much info about a game too soon is bad for marketing. You have to slowly build up the hype.
Edit: a word.

True story Raikirii, gotta be patient tayz. Also I wouldn't be surprised to see the gold and silver brothers be support characters only though. Same with the Ino-Shika-Chou's parents. I think the roster will be a little bigger than Storm Generatioms minus the first generation characters. The supports from SG will be mains in S3 with new characters stepping up as mains and supports.