check out this from the Arena

It looks like there's a game in the works (but not by the Creative Assembly)

https://forums.totalwar.org/vb/showthread.php?t=53121

If you go to the website and look at the screenshots and then scroll down to the screenshot archive, you'll see shots of the strategy map.
It hasn't been updated in a long time - Gamespot has a release date of 2007.