Darkfall patch, and Aventurine has updated its website to help Agonian residents wrap their heads around the system proper.
Today's patch divides the world into lawful and lawless sections, the latter of which boast no alignment penalties upon entry. Clan cities remain under the control of their owners when it comes to alignment decisions, so even if the area surrounding your fort has shifted due to the update, city visitors will still be subject to the prevailing clan interpretations regarding alignment and consequences for aggression.
Today's patch also introduces a few smaller gameplay tweaks in addition to the alignment changes, chief among them an increase to loot drops while fishing and various changes to the fish box on player ships. The Darkfall Epic Blog has all the details.