Chapter IV is complete.
Also, a title change is likely in the works. I've never particularly liked The Humanist Inheritance, and in the rewrite, the humanist theme is weakening. This is unfortunate, but as the story evolved, that theme became more and more forced anyway. I promise you it will be much more pronounced in Crash and its hypothetical sequel, Interregnum.
Also, work has started on a short story set in the HI universe, entitled "Eminent Domain". No clue when that will be finished.
This concludes this public service announcement.