I've got it and have played it for about 6 hours now.
If you don't like Civ style game you probably won't like this.
If you do, then you'll want to check it out. it's got some very cool ideas and subtle changes to the regular stuff.
For example, Units don't have a fixed set of action points. Your civilization has a pool of Orders, that you can increase through various buildings/techs etc., that can be used with all your units... until the unit gets fatigued. So it's possible to have more things to do than you have Orders for. Example, Scouts can do up to 5 actions before they become fatigued. Moving takes an order to move a certain distance, shorter through rough terrain. Want to move the scout farther, go ahead and spend more Orders. But then maybe you'll run out of orders to have a worker build something or your armies move or fight. You can still move fatigued units it just costs an ever increasing amount of orders and sometimes resources.
This is a really well worked out mechanic.
Another thing is the CKII-like dynasty creation and personal relationships in the game with your family, other families of your empire and the leaders of other Empires.
There are minor civs that occupy city sites and you can trade and make war with them. There are also barbarian camps you can make deals with and hire their units.
Other big change is city sites. No more building cities where you want. you need to scout out city sites and build there. A city site usually has 3 or 4 hexes associated with it and you can settle on any of them, the others then become part of your city. Where and how you city initial border form is based on which of the hexes in a city site you settle on. Seems restrictive at first but quickly becomes an interesting mechanic.
More as I play some more....