The biggest additions are in Silithus, with the addition of 2 new raid instances collectively known as the Gates of Ahn'Qiraj. The first is a 20-man raid called the Ruins of Ahn'Qiraj, the second a 40-man raid called the Temple of Ahn'Qiraj.

However, no one is yet able to enter the instance, as there's a special world event needed to open the gates on each server. This became clear while roaming through Ironforge (on the Alliance side), as a new group of NPCs roam the Military Ward collecting various materials for the war. Bandages, herbs, cooking items and metal bars are all being collected, with serverwide quotas for each (the Alliance, for example, collectively needs to turn in 90,000 copper bars). Players recieve small rewards for turn-ins as well as a small commendation, and a Horde NPC resides in the Military Ward to keep players apprised of how close the opposite faction is to meeting their quotas. Assumedly, once all the war effort quotas are met, the world event to open the gates will be one step closer to happening.