Just played a few quick games.
Not bad, imho, but I really need to play some more to tell much.
Has the population of the countries been reduced? Because I seem to run out of it quite fast now, which is probably a nice way to prevent overly long, spammy RTS battles in the campaign.
During one campaign game I got repeated messages about the updates the AI had researched, did that happen because they had researched them before, or can the AI still research during the battles?