Here are the specific changes healers should be aware of in regards to the Cataclysm Stat Changes:

If you are a healer, expect to see:

A lot more Stamina.

All of your Spell Power converted to Intellect and Stamina.

Spirit instead of MP5. You’ll probably be happy with Spirit, though, because mana regen is going to matter more than it does currently. Healing paladins and shaman will benefit more from Spirit than they do currently.