In Courtesans 20,000 I answered the basic questions about the Setting of the Empire of Woman. It was however quite brief and for good reason.
I had a lot of new rules to cram in and the third, and probably most popular, Alternate Setting was also something of an afterthought.
In the Whores Blade 20,000 Rulebook I go into further detail about the Empire. Not just from the context of the Quizzers either.
The Core Rules shall focus on humans the most populous sentient species.
There shall be a future supplement about Aliens but there is enough variety to fill up a Wargame in just human politics both between the Empires various power blocs and the various Dissident factions.
So there you have it, the Wargame gives you more detail than the Roleplaying Game funny that!