The server is now running version 1.10. Even though this is considered a major update, it really isn't. And so we are not going to expand the map. Polar bears should spawn in the currently generated snow biomes but if you want to find a fossil you'll have to generate new swamp or desert biomes which you can do by looking on the dynmap. This also means that we will not be resetting the map in the next update but expanding the map instead. We should be able to get a good two years out of this map yet.