I don't think he made any claim other than we'll get at least around half a dozen more newcomers, not including Inkling, Ridley, or Simon.OK, I don't know what kind of downspiral you all have gotten yourselves into, but I'd like to please, please remind you all of the Smash 4 Gematsu leak for a second.
He had a lot of accurate information. However, it was also incomplete. People got venomous in insisting it WAS complete, that it was the be all end all of the roster. It was not.
I'd like to make a plea to everyone here to please hold your horses in assuming that the number of characters a leaker knows about is the cap on the number of characters in the game. It just results in the Smash fandom acting like a bunch of toxic maniacs and the last time it happened it wasn't even correct. So please settle down.
Since the list of characters is finalized in the early stages of development, I wonder if someone somehow got a hold of that. Emily seemed to know quite a bit before the game was even revealed.