Nekoo
Smash Master
Short answer: yes and no.So if we get more than 2 more characters, or if we get someone who isn't Ken or Incineroar, does that deconfirm box theory?
(and reopen the floodgates for speculation?)
Long answer: speculation was never dead to begin with since Vergeben obviously doesn't know all Characters and we already know he's 100% that there a second Square-Enix Character too risky to leak.
If someone else than those three get announced don't get your hopes up because it means those three might be our last pick.
TL;DR : you better wish that Ken/Incineroar get announced now to truly open speculation for the months of november