You can see a few alpha screenshots here in this thread:
Pictured below is a shot from the Boer War:
Also the Developer Diaries are now up to number 7 each one with in depth details on the game and how it will work. Good reading if you are into this sort of thing which I am. After the dismal time I had with Victoria 2 I am rather excited about this one but won't get my hopes too high until I see how it performs in my beta test coming up. I am guessing this will be the most complex AGEOD game to date and in a way I hope that I can actually get my brain to understand the underlying intricacies.
Some of the interesting Developer Diaries include 5 and 7. Number 5 outlines some Order of Battle information while 7 discusses commerce (this is also the latest).
An excerpt from Developer Diary 5:
To that end, we created two databases. One is the Models database, which describes every element that makes up our game units. The other is the Units database, which lists, for every unit, how many elements and in which proportion they are within said unit. For the models, every single regiment that is available has a unique name, as well as dozens of features and characteristics, which we shall detail in another diary. As a result, even if there are hundreds of regiments in a given nation (or a dozen individual ships), each can be seen with their own unique name. The UI has a specific window to show this. At the unit level, the various possibilities are composed of those very same models as well as an extra feature that we have added, called the recruitment (or construction) zone. This ensures that a unit can only be built in the area that it has been assigned to. For instance, troops of the British Army of India cannot appear in the UK or in the Americas; they can only be raised and recruited in the Raj. Similarly, French Black colonial troops shall appear in Africa and nowhere else. But recruitment is not only ethnically specific as it is also restricted to the physical location with other considerations.