Mages will receive some class changes next week. Blizzard is nerfing some AoE abilities that deal more damage than intended. Fire will be seeing single-target damage nerfs too.

(Source)

Mage AoE damage is generally trending a little higher than we’re comfortable with after the most recent update. We’re planning to make a few targeted adjustments to Mage AoE spells to bring them down to a more reasonable level. In addition to the AoE adjustments, Fire will be seeing some additional tuning, as Fire single-target damage is also trending higher than intended.

Mage

Fire

Damage of all abilities reduced by 5%.

Flamestrike damage reduced by 6%, and Flamestrike now deals reduced damage beyond 8 targets.

Flame Patch damage reduced by 6%, and Flame Patch now deals reduced damage beyond 8 targets.

Sun King’s Blessing now causes your next Pyroblast or Flamestrike to deal 260% increased damage (was 275%).

Frost

Frozen Orb damage reduced by 5%.

Blizzard damage reduced by 4%.

Comet Storm damage reduced by 5%.

Subzero damage to rooted and frozen targets reduced to 5/10%.

Arcane

Arcane Barrage damage increased by 3%.

Resonance increases the damage per target hit by Arcane Barrage by 10% (was 12%).

Arcane Explosion damage reduced by 6%.

Arcane Orb damage reduced by 8%.

We intend to make the above changes with scheduled weekly maintenance, on Tuesday, July 18 in this region.