Schwartz said that Volume III will deal with Australopithecus, which is the genus name commonly used for many early hominids. The final chapter will be a challenge for Schwartz, who plans to include a synthesis of not only the Australopiths but also the whole human fossil record. The goal is essentially to do science on the material that's already been discovered, and to hope that our colleagues will let us see, at least, the specimens they've already published. This has meant multiple trips to Europe. Volume I was to be turned in at the end of January, but the researchers got an extension first to see and then to include in that volume new specimens that were found in the Republic of Georgia.
People like to read about human evolution and they listen to the so-called experts.
Especially in intro to physical anthropology texts, people publish the same specimens. You have a stereotypic or a myopic view of a Neanderthal or a Homo erectus. You don't know that there is more material out there that can't be pigeon-holed into any of the traditional species. This is the only work of its kind. The first study on virtually the entire human fossil record, and it's also probably true that nobody will ever duplicate it.