Well considering you have to drink water like a fish in SA, guess it's good to know where all the water is.
They really did a fair amount of updating to the map. I was in Cherno for the first time I noticed that small village just north of it with the tall buildings. I then checked this map to see how much has changed. Seems like they tried to add more stuff to the north above the two airfields. Before there rarely was any reason to go past NWAF/NEAF other than to make a camp. Now there seems to be more. Cool.