Blizzard announced that they are bringing the Ahn'Qiraj raid to World of Warcraft Classic in roughly one month, after all the necessary testing is done.
Ahn'Qiraj is a buggy mess in World of Warcraft, although not for the reasons you might expect after hearing the term. It's more about the enemies you are facing but they also not all there is to the update.
According to Blizzard , version 1.13.5 will unlock in July 2020 and it will bring the long-awaited raid as well as the precursor events. The raid itself will unlock with the weekly raid reset on Tuesday, July 28, 2020.
However, before being able to do the actual raid, players will need to start and finish the quest chain that will allow them to craft a Scepter of the Shifting Sands. Furthermore, the war effort will kick off, which will prompt the players to donate resources in order to progress it.
It will take completing both these activities to be able to enter Ahn'Qiraj. Furthermore, the war effort is realm-based and only the players from the realms that complete it will be eligible for entry.
While there are several hurdles in the raiders' way, the rewards should be ample. First of all, the gates of Ahn'Qiraj will open which will offer an event for those present. Going all in and completing the event will yield an exceedingly rare mount. The catch is that the event will happen only once.
There are two raids located in the area, with one of them letting the players face one of the old gods for the first time.