Blizzard announced the upcomming changes comming with Cataclysm. Here is the original post from the Forum containing the changes for the Priest class:
In World of Warcraft: Cataclysm, we'll be making lots of changes and additions to class talents and abilities across the board. In this preview, you'll get an early look at some of the changes in store for the priest class, including a rundown of some of the new spells, abilities, and talents, as well as an overview of how the new Mastery system will work with the different talent specs.
New Priest Spells
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