I finally got down to working on the new chapter tonight, after watching the Bills lose. I have it well worked out mentally, fun changes coming to me at work today (basically, an idea I had figured wouldn't come until the second book now comes up naturally). I honestly don't expect to get two chapters out this week: my birthday is tomorrow, so cut that day out of my normal work flow :) Although, this one could come fast. We'll see.
(from experience, publicly saying something is a good way for it not to happen, so with luck this will get two chapters out of me)