I haven't read any post related to this yet, so thought it was worth a mention. I've just completed the daily for today, the mission Regicide. Towards the end of the mission, just before you enter the final area where you face Oryx (before going into the mist) there is a doorway with two statues that are scannable on each side, on inspection the ghost says the one on the right looks like Crota, and the left he states to be a give god, though one he does not recognise (does give the name also, but didn't quite get it) and then a statue of Oryx just through the door. Thought someone may find this interesting. Thinking this could potentially be a hint towards another dlc/ boss of some sort.