I received an e-arc of this book last week. I finally started to read it last night and couldn't put it down. Nowadays, that kind of book, one so good, is a very rare find for me. Even good books, I can put aside when I should be sleeping but not this one.
The novel is a fascinating twist on the 'end of the world as we know it' genre. It isn't a prepper tale- a weak frame of a novel supporting prepping instructions (what foods to store, how to store them, what weapons to stockpile, etc.). While the novel explores shades of religious fanaticism and 'end times' human psychology, it is done in a recognizable setting with a tint of fantasy and horror that cushions the lessons the author wants you to leave then novel with.
The ending surprised me- not exactly the way I wanted the end to be for certain characters that I couldn't help but become invested in, but it was done very well. I can't recall the release date for this novel, but I think it is soon. Go pre-order a copy, you won't be disappointed.