Map version numbers describe amount of content and changes you recieve with map update
for example:

- v1.x.0.0 updates where number "x" changes stands for big content overhauls or significant level changes (for reference: v1.1.0.0 update which bring player spawn area expansion with several new locations, and changes to original map area landscape).

- v1.0.x.0 stands for less significant to level changes like new items, small changes to locations, rebalancing of items. (for reference: v1.1.3.0 update with police clothing overhaul and other items)

- v1.0.0.x stands for hotfixes