Edit: now I have to read everything again...
Here you go:
Three playable characters whose stories will intertwine throughout the game, including two female protagonists who are yet to be revealed. According to Tornquist, these characters (the 3 playable characters) will be joined by a number of familiar faces from the previous two games in the series, including Dreamfall protagonist ZoŽ who has changed drastically since the previous title.
So my guess:
April + "The new heroine" + An old guy (most likely Kian because Ragnar has said many times that he has a bigger part to play)