The recent trailer for House of Wolves shows the Fallen traveling across an icy world after betraying their previous master, the Awoken Queen. Could it be that the Fallen rose up against the awoken after learning that their prime servitor had returned? I think the frost covered world we saw in the cinematic is one of the moons around Jupiter, where Kaliks is allegedly hiding. From the Destiny wiki: [i]Kaliks Prime is the Prime Servitor of the House of Wolves. Kaliks has been missing ever since the Queen of the Reef merged the house into her realm, but some believe it to be hiding among the Ananke group of moons around Jupiter.[/i] My theory is that the servitor managed to communicate with the remainder of the House of Wolves and convinced them to cast aside the Queen so that they could return to it. Thoughts? Edit: Also, the update to the Purple Ball is a sign that Kaliks is returning :p Edit #2: Wow! Thanks for the feedback on my theory. I'm glad that a lot of you agree. I'm also seeing some really good theories by others as well. Keep it up. Edit #3: We now know that Skolas was responsible for the Fallen uprising, but there is still a very good possibility that we'll face Kaliks Prime in a future raid. Here's a video by MajorMartian that explains that theory: https://m.youtube.com/watch?feature=youtu.be&v=1HSG4RpAEj8