Well it looks like they fixed the issue with the weapons all being on the same angle. Graphically, this game looks even better than it did in the previous screens (which were impressive).
Also included in the new preview at IGN, there are many more sp[ecial abilities with different troop types, more and more difficult terrain and and more and smoother battle animations.
I'm so excited by balls are twitching... because I stroke them when I think about Medieval 2.