User blog comment:Legendary Pop-Fizz/Smash Bros. NX will be a Launch Title! and it was confirmed 2 years ago?!?!/@comment-26233737-20160202001218/@comment-24416652-20160202025359

I suspect that, if this does happen anyway, this will be a port of Smash 4 with the addition of some 3DS features, Ice Climbers, and maybe a few newcomers with corresponding stages. They could make it some sort of "half-game". Maybe their roster choices will be other ballot winners? Hopefully this would include Shovel Knight.

(And/or Shantae and Rayman.)