I think it's going to be more open than previous entries, but not 100% sure. Previous titles had different maps broken up into zones. this one seems like it may still have different maps, but the maps will be open and a lot bigger.
I don't think it would work well having one completely open map. There have been different environments in the maps like grasslands, tundra, desert, volcano, etc. Depending on the hunt would determine which map would load up for the mission. If it was completely open world you would spend too much time traversing the map getting into the proper biome for the different hunts. I'm hoping that there will be several maps to break up the different biomes, but each map will be one seamless environment.
