World of Warcraft : Patch 3.1.0 Class Change Details

         DEATH KNIGHT

         Gargoyle and Unholy Blight have swapped talent positions. Gargoyle’s damage has increased and runic power cost per time has decreased.

         Pestilence – this spell no longer causes damage but just spreads diseases. Blood Boil is intended to be the general area attack, and has been changed to be castable on targets with no diseases on them, but does extra damage if diseases are present.

         Unbreakable Armor now absorbs a flat amount of damage that increases as your armor increases. It no longer boosts armor.

         The Frost tree has been shuffled. Among other things, PvP talents such as Endless Winter are closer to the top of the tree where Blood and Unholy death knights can access them.

         Sudden Doom – this talent now procs a Death Coil rather than requiring an additional button click. It works similarly to shamans’ Lightning Overload.

         Magic Suppression and Blood of the North have been reduced to 3 ranks for the same benefit.

         Blood Gorged now grants armor penetration instead of expertise.