The official Japanese Street Fighter IV site posted a new Aftermath trailer, this time focusing on Sakura after the events of the Street Fighter 2 tournament. The spoken dialogue is Japanese.
Considering Capcom has went through the trouble of making Aftermath trailers for C. Viper and Chun Li, it's a reasonable assumption we'll see something bigger come from this than just trailers.
Possibilities include a new anime movie, but since Capcom hasn't announced anything yet though, this is all just speculation. But I can't help but wonder if they might try to coincide a new anime movie with the heavily rumored 2nd version of Street Fighter IV.