New Zion was the name of another city that was secretly built after the truce. It was stated to be more heavily defended than the Original Zion. When the machines discovered the city and its locations from their Cypherite allies. Stating that the city was in direct violation of the truce, the Architect orders that there will be no more people to be free from the Matrix as well as sparking the Second Machine War.
- The Matrix Online (Mentioned only)