
CAI received some slight bonus in various sectors to be more challenging. With their new Spear Square ability they are now very unique and useful. Yari Samurai have reduced Anti-Cavalry Bonus (was too high in vanilla) and +1 Defence. Naginata Samurai have increased attack to be more useful. This makes them much more useful and also very handy when having units equipped with arquebushiers because you can handle them much more easily. Yari Ashigaru and Yari Samurai can now form Spear Squares. Thanks to the multiple feedback about this matter. Matchlocks are now more accurate and powerful as they should be (improved the ballistics not the stats).
But not only this is changed so take a look at the changelog: The new version is almost entirely dedicated to the new realistic Darth Effects system which will blow your mind away when you see it.