The GURPS Cyberpunk source book doesn contain any specific world setting. Is there a GURPS Cyberpunk world sourcebook?
Yes. GURPS Cyberworld, by Paul Hume of Shadowrun fame, describes a detailed cyberpunk setting. The emphasis is on “punk” rather than “cyber.” The tech level is early TL8, and the cyberwear is often “bleeding edge” rather than easy-to-obtain, off-the-shelf stuff. GURPS Terradyne is a source book for low-tech space science-fiction gaming. This book can easily be “cyberized” [Note from Kromm: I’ve done it!] but only includes a limited number of “hooks” for the cyberpunk genre. GURPS Autoduel, Second Edition is now in print, and has many more features of the cyberpunk genre. You can also use the cyberpunk settings for other games as background material for GURPS. See the Conversions section.