From a Player Perspective
Want to see Combat Revision 2.0 changes from a player perspective? Check out Symmetric's An Introduction to Combat Revision 2.0 over at Radio MegaCity. (Adobe Acrobat Reader Reqired)

Keep reading below for a top-line view of the changes.

Removal of Zero-Sum Combat
With Combat Revision 2.0 in place, their is no longer one winner and one loser during each round of Interlock. Each round now results in either one hit and one miss, two hits, or two misses.

The only exception to this is when a special attack is launched during Interlock. If the special attack succeeds, it will trump the other player's attack, so only one player will take damage that round.