Alchemy

Alchemy: Free Action Potion now lasts 30 sec if the player is level 80 or lower. For higher levels, the duration is equal to [ 30 – (Player Level – 80) * 4 ], that’s 10 sec at level 85 if you suck at maths.
Alchemy: Living Action Potion now lasts 3 sec, down from 5 sec.
Alchemy: Transmute: Pyrium Bar now requires 1 x Elementium Bar and 1 x Volatile Earth, down from 4x of each.

Blacksmithing

Elementium Deathplate now has 321 Strength (-20) and 208 Mastery Rating (-20). Now has a Yellow Socket (+10 Strength socket bonus)
Elementium Girdle of Pain now has 233 Strength (-20) and 149 Haste Rating (-20). Now has a Yellow Socket (+10 Strength socket bonus)
Elementium Gutslicer now requires 4 x Hardened Elementium Bar (Down from 25), Truegold x 5, Chaos Orb x 3 (up from 1).
Hardened Elementium Girdle now has 233 Strength (-20) and 149 Mastery Rating. (-20). Now has a Blue Socket (+10 Dodge socket bonus)
Hardened Elementium Hauberk now has 321 Strength (-20) and 208 Parry Rating. (-20). Now has a Blue Socket (+10 Parry socket bonus)
Light Elementium Belt now has 233 Intellect (-20) and 149 Spirit (-20). Now has a Yellow socket (+10 Intellect socket bonus)
Light Elementium Chestguard now has 321 Intellect (-20) and 208 Critical strike rating (-20). Now has a Yellow socket (+10 Intellect socket bonus)
Persuader no longer requires Skin of Shadow to be crafted.

Cooking

Cooking: Broiled Dragon Feast now requires Dragon Flank x 3 (down from 6) and Delicate Wing x 2 (Down from 4)
Cooking: Seafood Magnifique Feast now requires Highland Guppy x 2 (down from 4), Lavascale Catfish x 2 (Down from 4), and Fathom Eel x 2 (Down from 4)

Engineering

Engineering: Nitro Boosts had “They rarely explode violently, so don’t worry about that.” added to its description.

Enchanting

Enchanting: Enchant Cloak – Shadow Armor no longer increases Stealth.
Enchanting: Enchant Weapon – Avalanche now also procs from spell damage.
Enchanting: Runed Elementium Rod now requires 515 Enchanting.

Jewelcrafting

Eternal Shadowspirit Diamond now increases Shield Block Value by 1%, down from 5%.

Leatherworking

Chestguard of Nature’s Fury now has 321 Intellect (-20) and 221 Mastery Rating (-20). Now has a Red Socket (+10 Haste Rating socket bonus)
Lightning Lash now has 233 Intellect (-20), 149 Spirit (-3) and 169 Haste Rating (-10). Now has a Red Socket (+10 Intellect socket bonus)
Stormleather Sash now has 233 Intellect (-20) and 116 Mastery Rating (-20). Now has a Red Socket (+10 Intellect socket bonus)
Twilight Scale Chestguard now has 321 Intellect (-20) and 214 Critical strike rating (-20). Now has a Red Socket (+10 Haste Rating socket bonus)
Shifting Cloak no longer requires Skin of Shadow to be crafted.

Tailoring

Tailoring: Cenarion Herb Bag no longer requires Morrowgrain to be crafted.
Tailoring: Darkglow Embroidery now increases your Spirit by 580 for 15 sec instead of restoring 800 Mana.
Tailoring: Lightweave Embroidery now increases Intellect by 580 instead of spell power.