Last night during EVO 2013, Capcom announced that Street Fighter IV will be receiving five new characters along with new stages, and new character balancing in the form of DLC. That DLC will turn the game into Ultra Street Fighter IV, or you can buy the Ultra version of the game at retail when it hits stores.
Ultra Street Fighter IV will be releasing early next year for PlayStation 3 and Xbox 360. You can buy the DLC for $14.99 to upgrade your copy of Street Fighter IV to the Ultra version of the game, or you can buy a new retail version of the game for $39.99, and it will include all of the DLC.
The announcement trailer for the sort of new game showcases four of the five new characters. You can check it out above.