The biggest rules change is combat. (In case you missed the memo, Wizards has updated a few things.) Last night I read and re-read the combat section but I’m not sure that I fully understand it. While the old way of doing combat was more complicated, I had spent many hours fully understanding all of the intricacies. Much as if the rules of chess were changed and pawns could now move diagonally, I’m not sure how the new combat rules differ greatly from the old ones.
The new combat rules deal damage as the damage is assigned, so there is not a step between assigning and dealing damage. That seems simple enough but the rules about multiple blockers is still fuzzy in my mind. The new rules state that the attacking players puts the blocking creatures in order, assigning them 1,2,3 and so on and then deals damage to them in that order.
Personally I don’t see a difference between putting the blockers in order (1,2,3) and not putting them in order. You will still kill the creatures that you want to. Hopefully the nuances of this new combat scheme will be explained in further detail. I would love a computerized demo like the one that is packaged with the 10th Edition starter kit and hopefully Wizards will put out a new version when Magic 2010 comes out. You can download the Windows demo here (85 MB).