Patch 4.0.6 - PTR Build 13561
A new PTR build will be deployed on test realms, most of these changes are probably already in the official notes but I'm sure there are a couple of new things too.
Important - For the first time in history, I decided to stop being stupid! Datamined info is now placed in MMO Champion quotes to help differentiate datamining from official information, and it only took me 4 years to do that! Feedback appreciated in comments.
Professions Changes
Originally Posted by MMO-Champion
Alchemy
Spell Changes
Originally Posted by MMO-Champion
Death Knight (Forums / Cataclysm Talent Calculator / Beta Skills/Talents)
Blood
Druid (Forums / Cataclysm Talent Calculator / Beta Skills/Talents)
Restoration
Paladin (Forums / Cataclysm Talent Calculator / Beta Skills/Talents)
Holy
Priest (Forums / Cataclysm Talent Calculator / Beta Skills/Talents)
Rogue (Forums / Cataclysm Talent Calculator / Beta Skills/Talents)
Combat
Shaman (Forums / Cataclysm Talent Calculator / Beta Skills/Talents)
Restoration
Warlock (Forums / Cataclysm Talent Calculator / Beta Skills/Talents)
Pet Abilities
Warrior (Forums / Cataclysm Talent Calculator / Beta Skills/Talents)
Arms
More...
A new PTR build will be deployed on test realms, most of these changes are probably already in the official notes but I'm sure there are a couple of new things too.
Important - For the first time in history, I decided to stop being stupid! Datamined info is now placed in MMO Champion quotes to help differentiate datamining from official information, and it only took me 4 years to do that! Feedback appreciated in comments.
Professions Changes
Originally Posted by MMO-Champion
Alchemy
- Alchemy: Free Action Potion now lasts 30 - (Player level - 77) * 3 if the player is above level 77. That's 30 - 8 * 3 = 6 seconds at level 85.
- Alchemy: Lifebound Alchemist Stone is no longer unique.
- Alchemy: Quicksilver Alchemist Stone is no longer unique.
- Alchemy: Vibrant Alchemist Stone is no longer unique.
- Alchemy: Volatile Alchemist Stone is no longer unique.
- Alchemy: Living Action Potion now requires 1 x Mountain Silversage instead of 2 and no longer requires Heart of the Wild
- Alchemy: Mysterious Potion now restores 1 to 30 000 health, up from 1 to 15 000.
- Alchemy: Mythical Healing Potion now restores 18900 to 23100 health, up from 7500 to 12500.
- Cooking: Scalding Murglesnout now requires Murglesnout x 3 instead of Sharptooth x 3
Spell Changes
Originally Posted by MMO-Champion

Blood
- Scarlet Fever now lasts 21 sec, down from 30 sec.

Restoration
- Rejuvenation now costs 20% of base mana, up from 16% of base mana.
- Sudden Eclipse now restores 20 Solar or 13 Lunar Energy. Up from 5 Solar or 7 Lunar.

Holy
- Divine Light now costs 33% of bse mana, up from 30% of base mana.
- Flash of Light now costs 30% of base mana, up from 27% of base mana.
- Holy Light now costs 10% of base mana, up from 9% of bse mana.
- Walk in the Light now increases the effectiveness of healing spells by 10%, down from 15%.

- Mind Blast base damage has been reduced by 21%. Now deals 1277 to 1349 Shadow damage, down from 1617 to 1709 Shadow damage.

Combat
- Blade Flurry now reduces energy regeneration by 30%, up from 20%.
- Executioner now increases the effectiveness of Slice and Dice by 20%, up from 16%. Each point of Mastery increases damage by an additional 2.5%, up from 2%.
- Elusiveness now reduces the Cooldown of Cloak of Shadow by 20 sec, up from 15 sec.

Restoration
- Healing Rain now has a 40 yards range, up from 30 yards.

Pet Abilities
- Devour Magic now has a 25 sec cooldown, up from 8 sec.

Arms
- Mortal Strike now costs 20 rage, down from 25.
- Single-Minded Fury now increases damage by 20%, up from 15%.
More...