I actually just read all the Present chapters. The rest I skipped. I think this story should be stopped soon. Just because its popular,there is no point of adding more books to the extent that there is no more storyline. It will just become a repetition. Stop while people still love it.
One burning question though: What is actually Kieran's role? Will he forever become a sidepiece to Poppy and Cas? Maybe he needs to have his own love story.