>I heard from one who it is (I'd rather stress it as "might be" since it's only them that heard that it is) before I heard from multiple people that it is not Decidueye (including some that weren't even Smash sources of mine, but for other things, that heard Decidueye isn't in either)
I heard from two Smash sources that it isn't Decidueye, Lycanroc, or Mimikyu.

>I would share who the Gen 7 Pokemon is that I heard, but since it's only coming from one person right now and the others are working on finding out who exactly was chosen, I want to make sure it really is that one before I pull that trigger.
I could just let it be a surprise if I do find out who or it or is definitely the one that I heard, since it might be more fun to let you all have that moment of finding out if no one else leaks it.

>But no matter what happens, it's going to be controversial and "disappointing" to its extents since it wasn't the 3 that people would have and were most expecting. But it's Sakurai. I hate to say I trust his judgement when it comes to something like this. But I actually do.

So Vergeben might know the potential Pokemon newcomer, but won't tell us who it is.

https://gamefaqs.gamespot.com/boards/234547-super-smash-bros-ultimate/76866145?page=16