Yeah I wondered this the other day. (Destiny)

by Revenant1988 , How do I forum?, Wednesday, October 15, 2014, 20:02 (3781 days ago) @ Xenos

I would say it is going to be in future DLC, but why would they show it when they barely showed the actual shipping maps in trailers?

Maybe a free map during some event?

There's a card somewhere that mentions the Cabal have either Phobos or Deimos out of it's normal orbit, and intend to launch it as a weapon.

Perhaps there is some DLC themed around stopping that.