Here’s a bit from Kirkus, trimmed for spoilers and length:
In the unreal, magic (a blue substance called vitagua) is frozen into glaciers and as it melts it trickles back into our world. The process can be gradual or explosive. Astrid Lethewood, a “chanter” (she crafts magical objects using vitagua), fears chaos and violence and seeks a gradual course. There are dreadful complications, however… Astrid’s old friend Sahara Knax, now brimming with vitagua, has made herself the center of a cult, the Alchemites, who worship Sahara as a goddess. Problem is, though the Alchemites think they’re saving the environment, Sahara’s only interested in power and will sacrifice anybody to keep it…
… Previously charming and intimate, the narrative’s now become a seething fireball of ideas, actions and plots, complicated by GBLT and environmental agendas and a cast of thousands. Undeniably, something changed when the story jumped from local to global, and readers must judge for themselves which approach they prefer.
69 days until the book is out. Eeee!