This is what they say about spirit
And in the Balance druid/Elemental shaman part they saySpirit - Come Cataclysm, this stat should only be found on healing gear. Non-healing casters will have other systems in place to regenerate mana, and we are designing special solutions for Elemental shaman and Balance druids who often share gear with healers (more on this below). Raid buffs that currently boost Spirit (such as Blessing of Kings) will only boost the primary stats of Stamina, Strength, Agility, and Intellect. We are also likely changing the five-second rule and other quirks of the current regen system.
So Prayer of Spirit will be taken away in Cata or what?Raid buffs will no longer boost Spirit, so you shouldn’t find yourself unexpectedly over the Hit cap because of buffs.
If a Blizzard employee could answer this i would be glad