If you're playing on the PTR in World of Warcraft, you should take note that Blizzard QA Hortus has detailed all the changes in the PTR 2.2.0 patch notes. The latest changes that were done covered professions and quests.

Jewelcrafters should note that a new recipe for Steady Talasite (boosts resilience and stamina) is now available from the Halaa vendors. You can purchase it for your carefully hoarded research tokens. Blacksmiths get a new recipe for Ragesteel Shoulders which they can obtain from an unknown creature in Shadowmoon Valley.

In addition to this, Blizzard has reduced the number of pieces required to get the benefits of the Ragesteel set bonus, making the armor very viable in PvE and PvP environments now. Finally, Engineers get a cooldown for the engineer-made Parachute Cloak.

On the quest side, you can now get either a Darkrune or a fragmented Darkrune from the quest Banish the Demons. Another quest that had its rewards modified is the Relic's Emanation quest which had the money reward decreased and the Ogri'la faction reward raised. The Bomb Them Again quest has been made slightly easier with the cooldown of the Skyguard bombs lowered to five seconds from the previous 10 seconds.

The changes look pretty sweet, and should make for a more fluid experience in playing WoW. Hopefully, we'll be seeing more changes implemented to balance out the quests and open more options to various professions in the game.