The British Board of Film Classification has recently plastered an age rating on the Arcade Edition of SSF4.
The arcade version got a release earlier this year, and Capcom have since considered porting the tweaked version to consoles.
The BBFC listing mentions Japanese artist and animator Jiro Kanai, who is renowned for his work on Akira, Lupin III and Detective Conan. According to the listing, Kanai directed six minutes of new cutscenes for the game, which have passed without cuts.
Check out the full listing on the BBFC site.