Sagat and Balrog in Street Fighter IV
We haven’t heard anything specifically about Vega or M.Bison, but Capcom has now confirmed that Sagat and Balrog will indeed be in Street Fighter IV, as demonstration by the test locations around Japan. The characters are not in the character select screen, so we could be in for some Street Fighter II style action rather than Street Fighter II: Championship Edition action.
The test build is also pointing toward three new stages: Drive-In at Night (North America), Beautiful Bay (South Asia), and Inland Jungle (South America).
Source: Capcom Blog