A few reasons.
Aside from the obvious that life tends to throw you curve balls and grenades to side track you, I've been stuck on how exactly I wanted the "city" in the story to look like. I'm still not one-hundred percent sure so I'm sitting on the chapter for a little while longer before I post it.
Once it's live, there is no going back. So, I want to make sure this was something that one, I can live with; and two, it makes sense.
My apologies but this particular chapter will be delayed a while longer.