If you guys remember, just less than a year ago, we had something similar dropped by the devs where they showcased a series of upcoming characters which would be playable in future updates. However if you notice it closely, you'll see that Ineffa was not in it. I think the devs will be planning to do something similar here by releasing all of these six characters and then releasing one additional character not shown here as the last character of this patch, with mechanics tied to the upcoming region of the game. What do you guys think?
Theory: Whoever the sixth character (reflection) is in this picture will not be the final playable character in Nod Krai.