As far as I know, the "Creation" book is out of print ?, Am I right?. if so, WHY ?,... well, I was searching for new Watchtower articles trying to debunk, for instance, human evolution. So, I did my homework, for the first time, so as to read past and updated papers and books on human evolution. So I downloaded papers published in Science, Nature, Journal of Human Evolution, Evolutionary Anthropology, Proceedings of the National Academy of Science, the book "The Primate Origins of Human Nature", and the book "The First Humans, Origin and Early Evolution of the Genus Homo". So, I think I did a good homework by observing the fosil records, then I proved for myself that the current evidence is overwhelming in showing that there were primitive homo species well before Neanderthals and modern humans. Even Neanderthals show morphological difference in some bones.
So, I suspect that the Society would have a hard task in writing a new "Creation" book, regarding the overwhelming updated evidences. See, for example, the Turkana boy (a Homo Erectus of 1.5 millions of years. It is not a monkey, nor a human. So, the Society is avoiding to treat this issue many years ago.