Street Fighter V will not have on-disc DLC, producer Matt Dahlgren confirmed directly to me at the Tokyo Game Show.
Downloadable content being already stored on the disc and unlocked with money caused quite a kerfuffle with Street Fighter X Tekken. I was very excited to use the word "kerfuffle," so I asked Capcom's Matt Dahlgren if there would be any on-disc DLC for Street Fighter V. I was answered with a very assertive, direct, "There will not be on-disc DLC, for sure."
So there's that.