I think it's safe to assume that "'Til Death's Done Us Apart" is the continuation of the Caleb saga.
I've lost the plot of that saga btw, Don't Say a Word is the obvious sequel - "Unlike the last time here (The End of this Chapter) I now have the means and a will sincere", and at the end he kills her: "I promise you the end before the first light arrives".
Caleb was a prequel, the backstory and Juliet, which is btw among the very best songs of SA and probably, along with Deathaura, the best at all for me after Unia, is... well, the girl waking up at the last moment and saving herself by tricking Caleb into poisoninh himself? so if Caleb died what's the point of a sequel?
Looking forward to it anyway! hope Closer to an Animal won't be a red flag of the blandess of the record.