I'm starting to wonder if this is fake.
I saw vaanrose's reply; I was almost sure that LED screen of the banner had a cloud in Point D that didn't match the current banner, as it seemed to have a bottom part that should've went past Bowser Jr.'s head, but oh well.
I'm not entirely sold on the leak, but I'm not against it either. The proof for it being fake is just as good as the proof for it being real.
Y'know, I just realized the problem with these insider guys; yeah, they can't say much or else they lose their source, but come on, why try to spoil anything at all? Because you want to show off that you know things most don't? Because you want a reputation for being correct?
Because you want internet fame?
Anyway, I really think the next direct will make or break this leak; if a new character's pose in the mural doesn't match their pose in the leak, it's dead. If they do match, it's real. It's as simple as that. It's possible that the marketing stuff for the background is different due to how it's printed or something, so meh.
Also, has anyone shared this yet? It's from the B-K thread:
If this is fake, either they went through a bunch of mental hoops, or it's actually the guy involved in the leak and he just messed up.