So it really was right. Roshihikari already said months ago that Gen was going to be in the game, that Gouki was going to be in the game, that Boxer/Sagat would be in - WHILE THE GAME WAS IN DEVELOPMENT. Even knew the outline of the story of the new Chun Li movie, how Bison and Shadaloo would be introduced. Watch Yun and Yang appear in SFIV.
Some hints he gave out long ago:
Gouki - http://forums.shoryuken.com/showpost.php?p=4862732&postcount=344
Gen - http://forums.shoryuken.com/showpost.php?p=4877016&postcount=148
Synopsis of SF movie - http://forums.shoryuken.com/showthread.php?t=154000