Errata I notice while reading through it (I'm posting this so that the PDFs can be updated before the thing goes to print at the end):
I'm including minor errata as well.
The Desolation, Part 1:
Bottom of Page 6, DM Notes, last sentence: "roles" should be "rolls"
Page 11, stat block, under "Tactics": Last word in first sentence is "breath" but should be "breathe"