Update - 2200 Rating Weapon Availability
Update - Archaeology Grey Items Prices
The prices got changed again, Word of Empress Zoe is slightly less ridiculous and most of the prices have been increased again to compensate. (I didn't plan to post that so early, expect a better update in a few hours)
Update - Please see This post
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- 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. (Now Unique-Equipped)
- Alchemy: Quicksilver Alchemist Stone is no longer unique. (Now Unique-Equipped)
- Alchemy: Vibrant Alchemist Stone is no longer unique. (Now Unique-Equipped)
- Alchemy: Volatile Alchemist Stone is no longer unique. (Now Unique-Equipped)
- 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
- 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.
Item Set
- 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%.
Subtlety
- 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.
Fury
- Single-Minded Fury now increases damage by 20%, up from 15%.
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