Attack, Defense, and Precision have been removed
Dexterity, Intellect, Strength, and Vitality have been added:
Dexterity
+Demon Hunter damage
+Monk damage
+Dodge (for all classes)
Intellect
+Witch Doctor damage
+Wizard damage
+Health from globes (for all classes)
Strength
+Barbarian damage
+Armor (for all classes)
Vitality
+Health (for all classes)
Armor will now supplement Defense, as well as provide
+Physical resist
+Chance to Crit has been added as an item affix
Player Life per Vitality has been changed:
Players will now start out with 10 Life per Vitality at level 1