I'd be remiss if I didn't mention, if you're wanting to see some previews of stuff that'll be in the final book, things the QS doesn't get into, I do post previews here and there on our Patreon: https://www.patreon.com/FalconianP?filters[tag]=The%20Blood
Thus far there's two big ones, Spirits and Sample Spells. Both also touch upon a few other concepts in sidebars or offhanded mentions. So, if you want to see more, support us and take a look!