No, not really, though i have the impression the AI has been indeed improved in all warfare aspects (maybe besides combat aircraft) in this expansion.
I have been testing/playing with different aproaches and looking in detail how AI in different countries is handling their wars. There seem to be less "frozen" fronts overall, what is directly related to better warfare abilities by the AI, i believe. Also, there seem a better capability to update their builded designs, though too slow compared to the human player. I consider this last aspect important, than in many ARRs we can read here, there is a way to large tech advantage from the human player compared to the AIs they are invading. Most fierce battles are at the beginning, when the tech advantage is not that big, well at least by those ARRs that begin early with warfare.
I have been considering giving the military AI again a try and letting it manage all (yes, all, i know,

) my military and see how far it comes. But i am not sure if i will try soon another AAR as it takes a lot of work and time to do, specially because my english is not that good.
Lets hope more people join this forum, and we see more posts and ARRs. I like to read them, and i always learn new things about the game and possible strategies. One of my favourite subforums in Paradox are the AARs

. Pretty good ones there, but mostly (or just) only about the self developed paradoxian games and mods.