If you purchase a map pack you will get ALL future updates to that map pack included in the purchase.
Map Packs are a once off purchase. We will NEVER remove maps from these only ADD.
For Empires we have 3 maps initially and will be adding a 4th Britannia map.
We will have two versions of this a basic and advanced (more territories) so it'll be 5 maps total. But As they are variations we wanted to set the expectations to 4.
We will also be adding a 5th map to Fantasy to include "Advanced River Town" (see below)