Cyberpunk Version 3.0 is the third edition of the Cyberpunk role-playing game, that takes place in an era known as Cyberpunk 203X. It was never published, and was released as an electronic (PDF) document.
The setting has been heavily updated from the event from the Firestorm Series, which covered the opening of the Fourth Corporate War. The aftermath of the Fourth Corporate War has resulted in widespread corruption of the Net and major losses of hardcopied data, to the point that all data is intangible and recent recorded history is in doubt. An example that pops up in Pondsmith's demos at conventions, releases on the Internet, and in the finished game is that history has become so corrupted that many people in the world now believe Richard Nixon, instead of resigning over Watergate, committed suicide on camera and that memes such as the moon landing being hoaxed become prevalent.
The war has also led to the collapse of nations, the world economy, and many of the staple megacorporations. This civil upheaval leads to the rise of the "altcults", alternative cultures similar in vein to the "phyles" from Neal Stephenson's The Diamond Age. In fact, Cyberpunk V.3 has more to do with the new postcyberpunk literary movement and transhumanism than with the Gibson-Sterling mirrorshades movement.
In addition to rules changes to the Fuzion system and background, Cyberpunk V.3 also uses concepts taken from Pondsmith's experience at Microsoft with computer and video games as well as corporate culture, such as a simpler character generation system using templates, web-based active content URL links for updates, and making groups, organizations, and corporations their own "characters".
The rulebook was noted for its use of action figure dioramas (1:6 scale) in place of conventional artwork.