Maybe it has just been me, but I noticed the AI making significant improvements in the game I played on King difficulty today (As France). The AI, compared to previous iterations, had an impressive science lead over me that took some time to catch up to, and were very aggressive when you did not follow their agenda/took a lead over them. For example, Gandhi, a somewhat weaker civ, was in the lead with a whopping 170 science in the medieval era, and had fairly well planned out cities. He applied heavy pressure on me during the industrial era where he declared war and nearly took out my city. This was more impressive because A) Gandhi is a fairly peaceful civ and B) he made sure to navigate the units around mountains that surrounded my capital. He positioned his units around the great general and made sure to knock out my strongest units (Vampires) first. All in all, I was very impressed by the leaps that the AI took in the game, especially since I wasn't using the AI+ mod. One thing I would like to add regarding the update is that it has made AI interactions more interesting. Civilizations are much more likely to be friendly or aggressive towards you depending on your societal alignment. The bonuses are also very interesting, but I do not feel that they are broken or overpowered. With France, my vampires were able to help me defend when I was weakest (Early game), but were not so overbearing that I could easily overwhelm unprepared civs.