Patch 5.3 will be hitting the European servers on Wednesday morning (22/05).
Most important changes are the comeback of the Voidbinders. You will be able to increase your item levels for only 250 VP per 4 items levels, for a total of 500 VP for 8 item levels per item. 4 new scenarios, as well as Heroic scenarios, will be introduced. For all of you who are having problems getting offspec gear, you will now be able to choose what kind of loot you want to receive from Raids, scenarios, bonus rolls and quests.
And finally, the storyline of Vol’jin vs Garrosh continues. The Darkspear Trolls are rebelling, Orgrimmar is on lock down, and the Warchief has sent crews into the Vale of Eternal Blossoms and into the Northern Barrens in search of resources to push his war machine forward. Check your mailbox, as you should be getting a letter from Lorewalker Cho to seek him out in the Seat of Knowledge.
You can find the release notes for 5.3 here.