Mongoose Publishing will release d20 Cybernet-Cyberpunk Roleplaying, a complete core rulebook for cyberpunk roleplaying, under the Open Game License in October.  It's being released under a royalty-free world wide license, which will allow other publishers to use the CyberNet logo and rules to create their own settings and adventures.    The 256-page, $39.95 hardcover is written by August Hahn.