Eurogamer has taken note of the British Board of Film Classification rating, which has the latest version of the fighter dated for June 24.
If the classification is for consoles, it goes against previous statements made by Street Fighter producer Yoshinori Ono, but would play into cryptic tweets he's made about Arcade Edition DLC. The new version would likely include the four new playable characters: Yun, Yang, Oni and Evil Ryu.
We've contacted Capcom to clarify exactly what's going on here. If the BBFC also classifies arcade machines, the DLC hints and classification could be two separate stories on parallel lines. However, if the classification is for consoles, it's still unclear if the new game will be a DLC code in a new retail box, or if current SSF4 owners will be able to buy it as a DLC expansion. Ono keeps using the term "DLC," so we'd lean toward it being the latter.
Update: Official statement: "Capcom has not made any announcements."