I think people are kind of worried that it may not be what it seems and they're not playable or only for story mode. CC2 does tend to not be clear on those things. But looking at the pics, it'd be weird if you could only be them in story mode yet it has all of the bars and such.
And while I'm DYING for Madara, I know damn well he's not gonna be revealed so soon. He's gonna be a reveal saved for later on, and they may try to wait till he's actually seen in the anime.