I'm actually a little worried. Sometimes 4chan gets it right, someone leaked Piranha Plant 2 or so days before the direct and everyone ignored him.
Then on the 4th someone said Nintendo is selecting all the DLC fighters, and the first 2 are Dragon Quest Slime then Minecraft Steve. 2 days before Sakurai said Nintendo already selected all the characters.
http://boards.4chan.org/v/thread/437803804
I'm guessing the names Verg heard was Slime, Sora, and Geno. I really hope PolarPanda's contact is right about Geno.
This pretty much breaks all the basic rules of thumb of believable leaks based on everything I've seen in my 12 years here:
-Leakers almost never know specifics. If they go into minor details, they're talking out their ***. Knowing things like final smashes and specific moves is way too specific. If they do this, it's a Kyle/Toby post (4chan slang for people who make fake leaks as a sort of fanfiction).
-Leakers rarely express absolute certainty. Usually they have some reservations because their information is almost always second hand.
-Leakers usually don't have repeated contact with their sources. For example, Verge came across his info a couple of months before Smash Ultimate was even announced and gradually talked about more and more of it.
-Leakers can be backed up by other credible leakers. If what they say flies in the face of what others say, it's probably fake.
-Leakers don't call out other leakers because, if credible, that draws attention to themselves. Like I've said, NDA's are a serious thing.
-Leakers don't claim to know what's impossible to know. "Sakurai had an epiphany?" Are they Sakurai? Fake.
-Leakers are to the point. This drags on for two posts to the point of being excruciating.
All this said, it's no better than a vast majority of 4chan fake leaks.