4.3 Patch.. La Priest

Overall
http://us.battle.net/wow/en/blog/3608419

Priests

•Divine Hymn now affects 5 targets, up from 3.
•Talent Specializations
•Discipline
•Atonement will now account for the target enemy's combat reach when calculating proper range, enabling it to be used on large creatures such as Ragnaros and Ala'kir.
•Divine Aegis has a new spell effect.
•Holy
•Spirit of Redemption has been rebuilt to address a few functionality issues and make it more responsive. Spirit of Redemption otherwise remains unchanged.
•State of Mind has been redesigned and is now called Heavenly Voice. Heavenly Voice increases the healing done by Divine Hymn by 50/100%, and reduces the cooldown of Divine Hymn by 2.5/5 minutes.
•Guardian Spirit’s healing bonus has been increased to 60%, up from 40%.
•Holy Word: Serenity now has a cooldown of 10 seconds, down from 15 seconds.
•Glyphs
•Glyph of Circle of Healing now also increases the mana cost of Circle of Healing by 20%.

ALSO:
•Spells which have an effect broken by taking damage past a threshold (Entangling Roots, Fear, Frost Nova, etc.) now count damage that was prevented by damage absorbs or other damage reducing effects.