One of the things everyones been clamoring for has been more troop diversity.
Lo and behold, it is finally here.
In 3.0 there will be three kinds of troops:
Light – counts as 1
Medium – counts as 2
Heavy – counts as 3
And every faction will have a setup based on those values.
However, every faction only has 5 points to spend, so an army setup might look like this:
Heavy has higher skills, better weapons and armor than Medium, which has better than Light.
Besides this, you can check the changelog to see what other updates have occured.