He specifically said that Bayonetta and Corrin were the last characters for Super Smash Brothers for Wii U and 3DS. This game will be Super Smash Brothers for NX.
They need new characters to make the upgrade appealing to people that already own the Wii U and/or 3DS versions.
lmao, normally I would say this is reaching. but Sakurai would probably take advantage of a technicality like that.