Has anyone else noticed that when you move your units into enemy territory, their upkeep cost goes up? I couldn't believe it when I moved a unit and noticed the amount of gold per turn go down. This seems to happen sometimes when they just leave a city too. I don't know if it's more in enemy territory or not.

more than 4 units out of your borders the price goes straight up ^^^^. Really annoying isn't it ? thats why quick units like cavalry are usefull , you dont have to be stuck out so long and pay too much.

That´s a great adition. Now they have to implement a way that suply lines can be cut [weakening the units without support] It´s more or less aplied with healing rates but is not half the same it could be.