https://www.polygon.com/2018/11/7/18071684/super-smash-bros-ultimate-dlc-fighters-lineup-confirmed

The post-launch roster for Super Smash Bros. Ultimate has been decided, according to game director Masahiro Sakurai, and it sounds like that list of new fighters has been picked by Nintendo alone.

“Super Smash Bros. Ultimate’s DLC line-up is now complete,” Sakurai said on his Twitter account — a rare instance of the game designer tweeting in English. “This time the selection was made entirely by Nintendo. I decide if we can create a fighter based on their selection, then come up with the plan.”