Blizzard has gone live with the latest patch to their quite large MMO, World of Warcraft, this time adding a whole list full of changes to the game including the addition of new raid content for players to eagerly consume.

Patch 5.4 is titled Siege of Orgrimmar, and will see players taking siege to one of the hometowns of the Horde faction as they race against fighting off the crazed Horde Warchief Garrosh Hellscream.

Garrosh Hellscream's reckless thirst for power has led him to do the unthinkable: from beneath the Vale of Eternal Blossoms, he has seized the desiccated heart of an Old God to use as a tool of war, unleashing horrors upon the sacred valley. The brazen warchief has also turned against other members of the Horde to create a purely orcish force of his own. Now this "true Horde" is amassing strength within Orgrimmar's iron ramparts. With Garrosh bent on total victory, he plans to demonstrate the potency of the true Horde by conquering not just the Alliance but the whole of Azeroth.

As per usual, Blizzard has a large list of patch notes which you can read in full over here, though has also released a handy preview video giving you a brief summary of the more important features to come out of this gargantuan patch. Check it out below.