This information comes from the official 2k forums where user Vore2K explained: “There are many unannounced alternate versions of characters. Hope to drill into the specifics soon!”
TheSmackDownHotel.com believe that the alternate attires could link to gimmicks of wrestlers from the past with many hoping that now Masked Kane has made his return he too will be featured.
They also note for example that Damien Sandow was announced as part of the game by IGN however in the trailer for My Career mode he was listed as Mizdow so it’s not clear if both will be included.
WWE 2K16 will be released on PS3, PS4, Xbox 360, and Xbox One consoles on the 27th of October in North America and on the 30th of October internationally.