BlizzCon 2009: Future of Attack Power, MP5, and Spell Power
According to MMO-Champion, Blizzard announced at the class discussion panel that Attack Power, MP5, and Spell Power will be eliminated with the release of Cataclysm. In their place, Agility will provide Attack Power, Spirit will provide MP5, and Intellect will provide Spell Power. Beyond that, Defense and Armor Penetration will also be eliminated. The ability to become uncritable for tanks will come through talents like Survival of the Fittest. Haste will also see a change. It will not only determine how fast you can attack or cast a spell, but will also determine how quickly you regenerate energy, rage, runes, and focus.