More Undocumented Class Tuning - Datamined Class Tuning with October 29th Reset

wowhead.com:

We've datamined some undocumented class tuning changes today which includes Balance Druid self healing buff, Shadow Priest Changes, more Elemental Shaman changes and more!

Below is a list of ALL the class changes with the weekly reset. Most of thesewere announced but some of these are undocumented.

Specialization (1)

• Effect #4 NEW Effect #20 Apply Aura: Modifies Buff Duration (Label)
  Value: 5000
  Affected Spells:
  
• NEW Effect #21 Apply Aura: Modifies Effect #1's Value (Label)
  Value: 10
  Affected Spells:
  
• NEW Effect #20 Apply Aura: Modifies Buff Duration (Label)
  Value: 5000
  Affected Spells:
  
• NEW Effect #21 Apply Aura: Modifies Effect #1's Value (Label)
  Value: 10
  Affected Spells:
  

Talents (2)

• Deals (56.304%64.7496% of Attack power) Shadow damage and infects all enemies within 10 yds with Blood Plague.
  Blood Plague
  A shadowy disease that drains 64 health from the target over 24 sec.
  Effect #1 Effect #1 School Damage
  Value: 0 (AP mod: 0.563040.647496)
  

Instantly strike the target and 1 other nearby enemy, causing (47.5042%57.005% of Attack power) Physical damage, and reducing enemies' movement speed by 20% for 8 sec\ \.

• Effect #2 School Damage
  Value: 0 (AP mod: 0.4750420.57005)
  

San'layn (1)

• 
  Blood:
  While Dancing Rune Weapon is active you gain Gift of the San'layn.
  Gift of the San'layn increases the effectiveness of your Essence of the Blood Queen by 150%200%, and Vampiric Strike replaces your Heart Strike for the duration.
  

Spells (1)

• A shadowy disease that drains 64 health from the target over 24 sec.
  Effect #1 Effect #1 Apply Aura: Periodically Leech Health: Modifies Damage/Healing Done
  Value: 0 (AP mod: 0.088220.097042)
  

Talents (1)

• 
  Blood, Unholy:
  Focuses dark power into a strike that deals (46.4256%55.7107% of Attack power) Physical damage and heals you for 25.00% of all damage taken in the last 5 sec, minimum 7.0% of maximum health.
  Frost:
  Focuses dark power into a strike with both