Warlock
Grimore of Sacrifice damage reduced by 33% for Affliction.
Mana Tap cost reduced by 17%.
Master of Disaster now increases Incinerate damage by 3/6/9% (was 4/8/12%).
Fire and the Flames now reduces Incinerate cast time by 2/4/6% (was 3/6/10%).
Doom Bolt damage reduced by 15% for Demonology.
Thal'kiel's Consumption now hits for 6% of pets' max HP (was 10% of current HP).
Shadowburn damage reduced by 7%.
Eternal Struggle now reduces damage taken by 3/6/9% (was 10/20/30%).
Just got posted on wowhead, alongside a few melee buffs by the looks of it, albeit skim-read.
You lot best be over reacting.