Arcane Subtlety: Now a 2-point talent that reduces your target's resistances to all your spells by 5/10 and threat caused by your arcane spells by 20/40%.
Wand Specialization: Now only a 2-point talent.
Magic Absorption: New 5-point, tier 2 ability. When you resist a spell, you regain 1/2/3/4/5% of your maximum mana and increases your resistances by 2/4/6/8/10.
Improved Arcane Explosion: Now a 3-point ability that increases the critical chance of Arcane Explosion by 2/4/6%.
Burning Soul: Now adds threat reduction as well as prevents you from loosing casting time by taking damage. Threat reduced by 15/30%.
Improved Scorch: The fire vulnerability DoT has been improved to 3% each, and still stacks 5 times (for a total of 15% increased fire vulnerability).
Frost Warding: Moved to tier 1.
Elemental Focus: New 3-point tier 1 talent that increases your chance to hit with fire and frost spells by 2/4/6%.
Improved Frost Nova: Moved to tier 2.
Permafrost: Moved to tier 2.
Frost Channeling: In addition to the mana cost reduction, this talent now also reduces threat caused by frost spells by 10/20/30%.
Shatter: The pre-requisite for this talent is now Improved Frost Nova rather than Frostbite.
Winter's Chill: Changed functionality. Now causes a debuff that increases frost crit chance by 2%. 20/40/60/80/100% chance to apply the debuff.
Ice Barrier: Now receives 10% of the benefit of +frost damage gear and can stack with a priest's Power Word: Shield.