HDL

The Icy Touch change is such a welcome one. We finally get an ability with high initial threat.
The change to Will of the Necropolis is also welcomed. It's the Blood tanks sorta-kinda-extremely-limited Last Stand. This will help counter our health pools being nerfed a few patches ago.
Abomination's Might (and Unleashed Rage) will help lower-geared toons the most. Players in ICC crit often enough that it was effectively up all the time.

The Icy Talons changes are wicked, esp for Dual Wield Frost DPS toons. Haste, haste, and more haste!
The change to Unbreakable Armor and Endless Winter means more threat for DK tanks. Nice.
More love for dual wield with Nerves change - might be worth trying DW.




blue

Death Knights

• Icy Touch: This ability now causes a very high amount of threat while the death knight is in Frost Presence.
  
  
• Chains of Ice: The ability now innately applies Frost Fever to a target.
  
  
• Rune of Razorice: Now stacks 5 stacks of 2% Frost Vulnerability instead of 10 stacks of 1% Frost Vulnerability. Proc chance changed to 100%.
  
  
• Talents
  
  
  
  • Blood
    
    
    
    • Abomination's Might: This effect is now passive instead of being a proc on certain strikes. Rank 1 is 5% attack power and Rank 2 is 10% attack power. The self strength buff remains unchanged.
      
      
      
    • Will of the Necropolis: There is no longer a cooldown on the frequency at which this talent can be activated. In addition, this ability can now also be triggered by damage which deals less than 5% of your health.
  • Frost
    
    
    
    • Endless Winter: No longer causes Frost Fever to be applied by Chains of Ice, but instead grants 2/4% strength.
      
      
    • Icy Talons: The personal haste benefit provided by this talent is no longer exclusive with other sources of melee haste. This will allow death knights to always swing 4/8/12/16/20% faster when Frost Fever is applied. Windfury Totem and the party/raid component of Improved Icy Talons still do not stack.
      
      
    • Improved Icy Talons: This effect is now passive instead of being a proc. The self haste buff remains unchanged.
      
      
    • Nerves of Cold Steel: Now increases off-hand damage by 8/16/25%, up from 5/10/15%.
      
      
    • Unbreakable Armor: The amount of strength granted is now 20%, up from 10%.
  • Unholy
    
    
    
    • Scourge Strike: Now deals 70% weapon damage, plus 12% of physical damage done as shadow damage for each of the death knight's diseases on the target. The net result should be larger strikes with no diseases present, while maximum damage with all diseases applied to the target should stay the same.
      
      
    • Unholy Blight: In addition to its previous effects, this talent now also prevents diseases from being dispelled from victims afflicted by Unholy Blight.