Enough people ask and I'm tired of giving the real answer. My wife has also snarkily noted that she no longer believes what is actually the real answer, so I have decided to stop telling anyone (including her) the truth.
So, if anyone asks, know that the answer (which I will deliver with my most Nutrasweet of smiles) will be this: "No, the book is not even close to being done. I have a lot to do on it. I may never finish. There: are you satisfied?"