Dubbed the 'second in the Cyberpunk Masters Series' The first being Hardwired: The Sourcebook.
This sourcebook takes you into the 'World of George Alec Effinger' and recreates his novels for the 'Cyberpunk' world.
The book details the world, history, and cities of 'Gravity' and details some of the culture and Arabic and Islamic life of the future.
It contains all new roles for use in this world, as well as a 'new vision' for 'the net' and new equipment.
Of course that all leads to a new adventure called 'Silken Nights'.