A few things I forgot to put in the last book update:
The Amazon listing has the book at 600 pages. That’s almost certainly optimistic. The contract calls for 400-500.
As far as the schedule goes, I’m currently hoping to turn the complete draft in on October 26th, which is about ten days after the original date. The publisher says that pushes publication out to April, six to eight weeks after the original date. I don’t quite understand the math, but I suspect that it has to do with the logistics of availability of printing equipment and the like.
Chapter Seven appears to be on track to be delivered this week, which makes the book just a smidge less than halfway done.