Lisa, first let me just extend a warm welcome!
I've heard of a few people working on new things, but I think most are in busy times at the moment and are looking at those long winter nights as the season where things will get finished.
As to the idea of a new Ancestor Chart book, I'd have to say, I enjoy those. The second one didn't sell as well as hoped, but I don't really know the figures and computations involved to understand if that was a lack of interest or an overly optimistic forecast. I do know I've heard the comment more than once that people would like to be able to publish corrections. After a few years, I suspect lots of people would