the story mode will have all the DLC characters featured
the overall playtime of the story mode is around 4 hours
more at the link: http://www.4gamer.net/games/283/G028399/20160609001/The next related piece of awesome news: all six DLC characters are fully playable in the story mode. That’s right, in addition to Alex, Guile, and Ibuki, that means that Balrog, Urien, and Juri are also playable! The official release of these characters will not be until later in the year, which means everyone will get to play them in advance through this mode. For the DLC characters that haven’t been released at the time the story comes out, those characters shouldn’t be considered final or tournament ready, as they still need to be properly polished and balanced. So, think of this as a free preview of the characters and enjoy playing with them before they get officially released in the other competitive game modes.