At least 2 story DLCs are already announce guys.
1- Daisuke Watanabe, Lead writer: "At some point, Sazh and his son Dajh got caught in Serendipity, but they came out alive having won a gamble of fate. The full details of this story will be revealed in a planned DLC release."
2- Daisuke Watanabe, Lead writer: "The throne of Etro that appears in The Void Beyond is empty for most of the game. This symbolizes the ever diminishing power of Etro. However, in the ending, Lighting sits on the throne. This symbolizes that the world's very existence relies on her to embody the divine will. As lightning wants to maintain hope, she enters the crystal stasis in order to protect the will of her sacrificed sister, Serah. We are planning a DLC release to reveal the background to this."
Also interesting is his point of view of the secret ending:
Daisuke Watanabe, Lead writer: "Although Caius dies in the final battle, we see him alive in the secret ending. This does not mean that there are multiple versions of Caius that have been manipulating events from a different timeline. Quite the opposite: the Caius that "dies" in Valhalla (a timeless place) is the same one that we see in the secret ending. His is a paradoxical existence that already knows how the battle ends and will still not stop until he reaches that end. His "death" only strengthens his resolve, as even this did not alter the course of events. The goddess died nonetheless, which is what he fought for all along".
Doesnt make that much sense, or should I say a bit too simple, but thats the official reasoning behind the story.
