This new system means that treasure maps will no longer direct you to a spawn randomly anywhere in the world. Instead, the size of the treasure map dictates in what level of danger zone the spawn will be located. Small maps will lead to a lower danger zone, but to dig up the treasure from a large map, players will have to venture into Danger Level V zones. These changes and more can be found in the patch notes.
[Thanks to Dengar for the tip.]