The book in question is the new Lonely Planet guide to Tokyo, the 2015 edition. It seems that they have been renewing this series every two years, and the 2013 edition has just been replaced.

We frequently see tourists strolling down our street with a Lonely Planet guide in hand, and most of them pass straight by, with their nose buried in it. Well, hopefully starting soon they'll be looking up when they get to our place!

(And now, our fingers are crossed yet once again. This is the 'Tokyo' guide, but I believe that the Lonely Planet 'Japan' guide is much more important, as many people plan to travel down the length of the country (Kyoto, Hiroshima, etc.), and thus purchase that volume instead. Will we be in the Tokyo section of that one too? We'll find out in a few weeks, when the new version hits the shelves!)