While SNK Playmore has yet to officially announce who those characters are, even releasing screen shots that still show a character select screen that features the stock 20 characters, they may have given us a hint about who's new. The official King of Fighters Anniversary web site now has illustrations of the oft-requested Mai Shiranui and K'. Yeah, so?
Well, those new illustrations are done in the style of The King of Fighters XII, leading many—including us—to believe that we'll see both Mai and K' added to the console versions of the game.
Clearly, SNK doesn't want to miss an opportunity to release another suggestive Mai statue, this time focusing on the underexploited side boob exposure she's giving KOF fans in the official artwork. That's leaving money on the table.
Unfortunately, this is little more than speculation at this point, but we'd bet it's speculation in the right direction.