Well, I finished the first draft of the manuscript yesterday. I'm deep into edits now. We are asking around for someone who has created some mental models to give the book a technical review. I am assured that the rest of the process --illustrations, references, proofs, etc.-- will take two to three months. Then they physical book will be available! We are also exploring the possibility of releasing the electronic version of the book earlier than the print version. I'll let you know what we figure out.