Here are the datamined class changes and tuning for Patch 10.1.5 PTR Build 49824.
Class ToolsBloodTalentsFrostTalentsUnholyTalentsPvP Talents (1)
Reanimates a nearby corpse, summoning a zombie for 20 sec that slowly moves towards your target. If your zombie reaches its target, it explodes after 3.0 sec. The explosion stuns all enemies within 8 yards for 3 sec and deals 15% of their health in Shadow damage. Duration changed from 20 sec to 30 sec Class ToolsBalanceTalentsFeralTalentsGuardianTalentsRestorationTalentsSpecialization (1)
Effect #1 NEW Effect #11 Apply Aura: Mod Mana Regen %: Modifies Damage/Healing Done Value: 150Talents (2)
Guardian: You gain: Astral Influence Increases the range of all of your abilities by 1 yards.99 yards. You also learn: Moonkin Form Starsurge Starfire Sunfire Typhoon Summons a beam of solar light over an enemy target's location, interrupting the target and silencing all enemies within the beam. Lasts 8 sec. Cost changed from 16.8% of base mana to 3.4% of base manaPvP Talents (1)
Sprout thorns for 12 sec on the friendly target. When victim to melee attacks, thorns deals (120% of Spell power) Nature damage back to the attacker. Attackers also have their movement speed reduced by 50% for 4 sec. Cost changed from 18.0% of base mana to 3.6% of base manaSpecialization (1)
Effect #3 REMOVED Effect #6 Apply Aura: Modifies Power Cost Value: 47% Affected Spells: REMOVED Effect #6 Apply Aura: Modifies Power Cost Value: 47% Affected Spells: NEW Effect #15 Apply Aura: Mod Mana Regen %: Modifies Damage/Healing Done Value: 150Specialization (1)
Effect #3 REMOVED Effect #5 Apply Aura: Modifies Power Cost Value: 47% Affected Spells: REMOVED Effect #5 Apply Aura: Modifies Power Cost Value: Read more on wowhead.com