Heres a nice nugget of info for all of you intending to buy Street Fighter IV tommorow, How to unlock the secret charachters:

Cammy - Beat Arcade Mode with Crimson Viper.

Fei Long - Beat Arcade Mode with Abel.

Gen - Beat Arcade Mode with Chun Li.

Rose - Beat Arcade Mode with M. Bison (Dictator).

Sakura - Beat Arcade Mode with Ryu.

Dan - Beat Arcade Mode with Sakura.

Akuma - Beat Arcade Mode with every character, unlockable and non-unlockable (except Akuma, Gouken and Seth)

Gouken - First, you must have all the unlockable characters unlocked that are available up to this point, including Akuma. Restart Arcade Mode with Akuma and get at least 2 Ultra Combo finishes and 2 Perfect Finishes. Gouken will challenge you. Win the match to unlock him.

Seth - First, you must have all the unlockable characters unlocked that are available up to this point, including Akuma and Gouken. Restart Arcade Mode with Gouken and get at least 2 Ultra Combo finishes and 2 Perfect Finishes. Gouken will challenge you. Win the match to unlock him.

Street fighter is the single most recognizable fighting game in the world. With 3 games and multitudes of revamped remakes. Finally Capcom make their comeback with an all new Street Fighter game, Street Fighter 4. instead of making the jump to a 3d gameplay style, Capcom opted to stick to 2 dimensional combat whilst making the characters and arenas 3d. making this animated brawlfest graphically stunning.

watch the amazing trailer below: