Thinking about it now, it actually is possible that the previous leak with "Ivy Blade" is correct and the two circles on the bottom is for Character Creation and Random. Assuming that the four recently added slots are for DLC or they are rearranged so that the four DLC are at the bottom row, we could see something like this:
Code:
Raphael Siegfried Zasalamel Nightmare Cervantes
Xianghua Maxi Sophitia Astaroth Ivy
Yoshimitsu Kilik Inferno Grøh Voldo
Talim Mitsurugi Geralt Taki Seong Mi-na
CaC Azwel Hwang* Guest* Aeon* Tira* Random
^* Downloadable Content
Hwang and Aeon or Lizardman would be there because an older leak that brought up the name Azwel also brought these characters up. Added in a guest there since there is a good chance there will be a guest. It's likely we will have to wait for Season 2 to see Cassandra, Yun-Seong, Setsuka, and Hilde in SoulCalibur VI. Since Tekken 7 appears to have more characters in Season 2 than in Season 1 then we could also be seeing more characters and another guest thrown in for a SoulCalibur VI Season 2.
Azwel and Inferno has been "technically" revealed but not "officially" revealed. I'm assuming we will see four more characters to be revealed and it will be Cervantes, Raphael, Inferno, and Azwel.
I'm hoping people will still buy and support the game even if their favorite character doesn't appear at launch. Chances are that we will see them in a possible Season 2 if the game is successful.