MicoSelva
backlog digger
I believe Swen meant PC/NPC reactions in his post. You won't actually be able to play with two male / two female party. At the moment all NPC dialogues are gender-independent, but they want to change that so NPCs recognize characters' gender and adjust their lines accordingly.
I may be wrong, but that's what I understood by tracking various infosources for this game (which has reached stalking level rcently).