So, which significant potential Newcomer(s) do people predict will be the inevitable disconfirmation(s) this week? Sakurai only has 14 more days to let fans down easily.
My guesses, from most likely to be disconfirmed in a Pic of the Day before E3 at the top, to the least likely at the bottom:
Ghirahim
Isaac
Tingle
King. K Rool
Medusa and Hades (to tease us in preparation for the Palutena reveal)
Bowser Jr.
Lucina and Robin/Tactician
Bandana Dee
Shulk
Takamaru
Professor Layton
Bayonetta
Krystal
Paper Mario
Geno
a definite Ridley disconfirmation (there's no way Sakurai will tell us his fate before E3)
Palutena, Chrom, Mii and Pac-Man are getting in for sure, in my opinion, so I didn't list them.