Update: Files verified – Rumor: Street Fighter’s Ryu to be included in future DLC for Super Smash Bros.
Update by Brian: Cutting Room Floor, a website that specializes in unused/cut content, has been able to verify the authenticity of the Ryu sound files (thanks Anthony):
Our crack research team has confirmed the existence of the Ryu sound files in the #Smash4 3DS update.
— Cutting Room Floor (@CuttingRoomWiki) April 15, 2015
Of course, this doesn’t necessarily confirm that Ryu will be included as upcoming Smash Bros. DLC. We’ll just have to wait and see how everything pans out!
According to a poster on Reddit, who is claiming to be a part of the 3DS modding scene, there has been code discovered buried in the latest update to go live for Super Smash Bros. that would lead some to believe more characters will be to come in future DLC. It would appear that sound files have been interpreted as clues for two possible future additions.
One file is a Victory sound for Roy from the Fire Emblem series. The second one is also a sound file that includes the Ryu music from Street Fighter II. At this stage this is purely speculation as Nintendo has been known to leave unused data in games in the past.
We are sure we will see more DLC in the future for Super Smash. Bros. but for now this is just a rumor.