So can we finally put this to rest?

[Veknoid_Outcast]

Mar1217 said:

mZuzek said:

It's called "Spirits", by the way. 

frame by frame, the pixelated green thing in #SmashBrosDirect says "Spirits". @GameXplain pic.twitter.com/fZKN0nYmIC

— Lattie (@Lattie9001) August 8, 2018

Edit: I guess the trend of characters dying in the trailers isn't just for show.

We don't know the full name yet, but I think it might be kind of a mixture between Classic/Adventure/Story modes

And to answer the OP, there was not much to question in it's authenticity as a brand new Smash game. It was aanounced as Smash 5, then it is.

Add a proper adventure mode to Smash Ultimate, alongside the obscene amount of content in terms of characters, stages, musical tracks, modes, and mechanics, and this could be a game for the ages :)