I think I just didn't expect them to go into it quite so much as they did. I love that they did! It just took me by surprise since I thought they'd already done as much as they were going to with it.
*awkward spoiler-avoiding sentences* :lol
I pre-ordered it and am going to be reading it ASAP! Unless I convince myself to re-read Firefight first...I should have thought of that last week. :look