Before the launch of Legion, there will be a comprehensive pre-event in World of Warcraft. But what details are already known about it?
The Legion attacks everywhere at once
As with the introduction of every new expansion of World of Warcraft, there will also be an introductory event for Legion that aims to bridge the gap between the current and upcoming expansion. We have summarized all the known facts and statements from the developers for you.

According to the latest statements made at BlizzCon 2015, the pre-event will go live approximately 4-6 weeks before the release of Legion, presumably as part of Patch 7.0, where players can also familiarize themselves with the changes to the classes. The burning Legion is launching a large-scale attack on all of Azeroth, with various areas being plagued by portals from which demons pour into the world.

The event is (in the currently planned version) divided into several phases. First, a foreboding landing ship appears prominently above the zone before the demons flood into the area. After the first wave of hell beasts has been repelled, the doom commanders arrive, high-ranking leaders of the Legion, such as pit lords.
In the third and penultimate phase, the attacks increasingly spiral out of control. More and more demons pour into the entire area and players are busy trying to contain it somehow. If you have withstood it long enough (i.e., eliminated enough greenskins), this step ends.

In the final phase, the Eredarlord Jaraxxus appears (yes, the one from the Trial of the Crusader) and personally shows you who the “Eredarlord of the Burning Legion” is.
Supposedly, there will be items of item level 665 for participating in this event, which currently seems far too low to be really “useful”. Hopefully, this will be an object with an interesting visual effect.
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