stats changes

# Attack power is being removed from gear. Death knights, paladins and warriors will still gain 2 attack power per point of strength, and all druids, hunters, shamans and rogues will get 2 attack power per point of agility and no attack power from strength, with the exception of druids in bear form / dire bear form, who may get attack power from strength in order to allow them to share tanking cloaks, necklaces and rings with death knights, paladins and warriors.
# Spell power is being removed from gear, with the exception of caster weapons. Characters will gain spell power from intellect much like how they currently gain attack power from agility and strength.
# MP5 and spirit: MP5 is being removed, all healing specs will rely on spirit for mana regeneration, with the rate affected by the Meditation passive talent tree bonus. The 5 second rule may be removed, with "in combat" and "out of combat" mana regeneration based on whether characters are in or out of combat. Spell DPS classes will no longer rely on spirit for mana regeneration, and spirit will no longer be on cloth spell DPS gear. Balance druids and elemental shamans will get talents to gain hit rating from spirit to allow them to share gear with healers and leather and mail caster gear will no longer have hit rating.[14] Shadow Priests will also have hit conversion on one of their talents in order to make it easier for them to gear up through more options.
# Armor penetration is being removed from gear. However, some physical damage specs may still be able to gain armor penetration through talents and / or mastery bonuses.
# Haste for melee and physical ranged DPS classes will affect the rate at which energy, rage, focus and runes are gained. Enhancement shamans and retribution paladins will gain talents which allow them to gain similar benefits from haste. It will continue to provide weapon speed increases for these classes. Haste for casters is unchanged.
# Block value is being removed from the game, blocking will provide 30% damage reduction, which can be increased through talent trees and mastery bonuses.
# Defense is being removed from the game, including both defense rating and the defense skill. All tanking specs will get anti-critical hit talents similar to Survival of the Fittest.[18]
# Weapon skills are being removed. A character has the proficiencies for all the weapons his/her class can use from the start, and doesn't need to improve them.
# Resilience affects only damage and crit damage done by players.
# Mastery rating is being added. The mastery bonuses will be trainable passive bonuses somewhere around level 75. Depending on the primary talent tree, characters will have a different Mastery available on the trainer with a base potency and 0 Mastery Rating