Like I've been saying, I'm konfident that the Gematsu list is incomplete. The likely scenario is that the unannounced Gematsu 3 are going to be announced pre launch, and the guy didn't know the secret/unlockable newcomers (if he's in advertising/marketing then he wouldn't, as people are only told what they need to know to avoid this kind of thing from leaking).
I think we'll see 3 extra newcomers (locked):
- Ridley (I don't see any sense in teasing fans with a playable character for months (and who is essentially the most requested character) if he's anything but playable. That's really not a good business tactic, he teased Palutena too and she ended up in, and she didn't receive anywhere the amount of teasing as Ridley has.)
- Ghirahim (Providing that Gematsu is correct and that Chrom is in, then 2 of the Trophy Quiz hints have lead to playable characters, I'm pretty confident that Ridley is in due to the reasons I stated above, so that would mean 3/4. If Mario and Pokemon both got newcomers representing their most recent main games, then I don't see why Zelda wouldn't.)
- K. Rool (although this could technically be Dixie. Mainly K. Rool because I see no other reason why the Kremlings would have been brought back when they could have just left it at the Tikis. The startling lack of a new DK stage suggests that something is up, which would probably fit K. Rool more than Dixie.)
Sakurai has addressed the "lack of female" characters nitpick in the roster, the other major nitpick was the lack of villains. 3 unlockable villains, two of which are among the most fan-requested characters, and have been since pre-brawl sounds right to me.