Priests
Abolish Disease: Now cleanses a disease every 3 sec, down from 5. Duration reduced from 20 seconds, down to 12 sec.
Devouring Plague: This spell now has a new icon.
Divine Spirit is now trainable at level 31.
Holy Nova: Mana cost reduced approximately 20%.
Hymn of Hope: This spell has been removed.
Improved Holy Concentration removed.
Prayer of Healing: This spell now heals the target's party, rather than being limited to just your direct party.
Shadowfiend: Health scaling increased. Now receives 30% of the master's spell power. Mana return increased to 5%, up from 4%. The Shadowfiend now returns mana when its melee attacks land, rather than when it deals damage. Movement speed normalized to player movement speed. Tooltip revised.
Talents:
Discipline
Divine Aegis: Divine Aegis effects will now stack, however the amount absorbed cannot exceed 125*level (of the target). It will also now take into account total healing including overhealing.
Grace: Duration increased to 15 seconds, but now is only limited to one target.
Improved Power: Word Fortitude - Now also increases your total Stamina by 2/4%.
Meditation and Improved Power: Word shield have changed locations with each other.
Meditation: Now grants 17/33/50% of mana regeneration while casting
New Talent: Soul Warding: Reduces the cooldown of your Power Word: Shield ability by 4 sec., and reduces the mana cost of your Power Word: Shield by 30%.
Penance: Damage increased approximately 30%.This spell can now be cast on yourself.
Power Infusion: This effect now has a new spell effect and sound.
Reflective Shield:This talent has been removed.
Unbreakable Will:Increased from 3/6/9/12/15% to 6/12/18/24/30%.
Holy:
Circle of Healing: Healing increased by approximately 40%.
Holy Concentration re-designed: Mana regeneration is increased by 16/32/50% for 8 sec after you critically heal with Flash Heal, Greater Heal, Binding Heal or Renew.
New Talent: Empowered Renew: Your Renew spell gains an additional 5/10/15% of your bonus healing effects, and your Renew will instantly heal the target for 5/10/15% of the total periodic effect.
Serendipity re-designed: When you heal with Binding Heal or Flash Heal, the cast time of your next Greater Heal or Prayer of Healing spell is reduced by 6/12/20%. Stacks up to 3 times. Lasts 20 sec.
Test of Faith: No longer increases critical effect chance of your heals, but healing done on targets lower than 50% health is increased from 2/4/6 to 4/8/12%.
Shadow:
Blackout: This talent has been removed.
Darkness: This talent is now in tier-1, moved up from tier-6.
Dispersion: Now clears all snare and movement impairing effects and makes you immune to them while dispersed.
New Talent: Improved Devouring Plague (Shadow): Increases the periodic damage done by your Devouring Plague by 5/10/15%, and when you cast Devouring Plague you instantly deal damage equal to 5/10/15% of its total periodic effect.
Improved Spirit Tap: Now grants 17/33% of mana regeneration while casting.
Shadowform: Now reduces all damage taken by 15%, not just physical damage. Bonus damage from critical strike chance removed and replaced by the ability of those periodic damage spells to generate critical strikes.
Silence: Range increased to 30 yards.
Spirit Tap: Now grants 83% of mana regeneration while casting.
Vampiric Embrace duration increased to 5 minutes, up from 1 minute. PvP duration is now 60 seconds. Cooldown removed.
Source