We have talked about making some of these changes and wanted to provide more details. You should be able to try these out yourselves on the PTR before they go live.

• Rune Strike -- damage decreased from 200% to 150% but threat increased to 150% from 100%.
• All multi-rune abilities generate 15 runic power.
• Anti-Magic Shell -- cooldown lowered to 45 sec from 60 sec.
• The healing of Blood Aura, Blood Presence and Death Pact has been doubled.
• Bone Shield -- mitigation reduced from 40% to 20%.
• Icebound Fortitude – now reduces damage by 20% instead of 50%. The amount of damage reduced increases with bonus Defense (to about 35% for 540 Defense, but it can go higher). The stun immunity is intended to be its primary role in PvP.
• Frost Presence -- bonus armor increased from 60 to 80% and magic damage reduction increased from 5 to 15%. We wanted to reduce the effectiveness of cooldowns but bring up base mitigation to reduce damage spikiness.
• Corpse Explosion -- damage increased substantially, added 5 sec cooldown, and changed cost to 40 runic power.
• Heart Strike – we overhauled this ability. It no longer has a haste debuff but will now be able to strike two targets like a cleave. It still hits for more than Blood Strike, but you can still use Blood Strike if e.g. you don’t want to break CC.
• Horn of Winter -- now has no cost and grants 10 runic power in addition to its stat buff, but has a 30 sec cooldown.
• Night of the Dead -- now grants 40/70% passive area spell avoidance to your pet in addition to its current effects.
• Outbreak – this talent no longer receive bonus damage from Pestilence. The bonus from Plague Strike and Blood Boil has been increased slightly.
• Bloody Strikes – the bonus damage from Pestilence has been moved here to help Blood AE slightly.
• Pestilence -- no longer has a 10 sec cooldown.
• Raise Dead -- now split into two spells: Raise Dead now raises a ghoul or pet ghoul (if talented). Raise Ally now raises a fallen party member (at no reagent cost).
• New runeforge rune -- Rune of the Stoneskin Gargoyle (two-handed only) now grants 25 Defense and 2% Stamina.
• Shadow of Death -- duration reduced from 45 seconds to 25 seconds.
• Unholy Blight, Dancing Rune Weapon and Hungering Cold – cost reduced from 60 to 40 runic power.
• Vampiric Blood -- in addition to its current effects, also adds 20% health temporarily.
• Will of the Necropolis -- now reduces the damage of any attack that takes the DK below 35% health by 5 /10/15% instead of boosting armor when wounded,
• Many death knight glyphs have been changed. In many cases the negative consequences were removed.
• New death knight sigils are now available, primarily from vendors, including a tanking-oriented sigil.