Contacts from fighting game website Shoryuken have revealed that the first DLC character for Street Fighter V will be arriving this March. Alex from Street Fighter III will be the first character to hit the game. He will obtainable through the in-game shop and challenge mode.
There is rumor that he and the rest of the DLC characters will be able to be purchased for 100,000 in-game currency fight money.
The rest of the aforementioned first DLC characters will be Guile, Balrog, Ibuki, Juri and Urien. There is no confirmation of their release dates, but its possible that we might be getting each once a month after Alex.
Also of note, PlayStation 3 arcade sticks and fight pads will be compatible with Street Fighter V. Street Fighter V drops February 16 for PlayStation 4 and PC.