Right in the title it explains it’s a book on theory. “Prompt engineering” doesn’t really fit in any theoretical framework I’m aware of and, while I also like graphics, most theory publications are light on them. You might be looking for a different kind of book, which is fine, but I think the content matches the title.

Also, a book on theory is going to lag quite a bit in terms of topics. The general process is that people discover something new and interesting empirically and publish articles on it. Other people develop theory explaining why that things work and publish articles on it. Once the theory gets crystallized, big ideas get distilled into a book.