Hihi.

Don't know if anybody cares but the next World of Warcraft expansion was announced last week. It's to be called: World of Warcraft: Legion
Basically, the Burning Legion is sick of all the things happening on Azeroth and decided that they're going to crunch us once and for all. Events start at the Tomb of Sargeras but the entire world will be a battleground.
Gul'Dan (from the alternate universe) will most likely be responsible for that since the whole Iron Horde thing fell apart in the Warlords of Draenor expansion, and was never successful in getting Grommash Hellscream in drinking the blood of Manoroth.
It is awkward, though. In the teaser cinematic for Legion, you see Gul'Dan prancing around Illidan, who is trapped in ice(?). I'm not sure if that's going to be awkward, though, since Illidan carried the Skull of Gul'Dan around like a binkie. I can't imagine what kind of ruin Gul'Dan could wreak if he ever gets his hand on the skull of his prime universe's counterpart. Things got really confusing in Warlords of Draenor.
To recap on what happened that led up to Warlords of Draenor:
Garrosh Hellscream, who was made the Horde's Warchief after Thrall stepped down, went a little crazy in the head, tried to have Vol'Jin assassinated, purged Orgrimmar of all non-Orcs (except for the Goblins) and tried to establish the "True Horde". The Goblins were kept around because he paid them a lot of gold to create new engines of war for him.
The Alliance, and what's left of the Horde, laid siege upon Orgrimmar to dismantle the True Horde's war machines and have Garrosh answer for his crimes. During the siege, you are shown that Garrosh wasn't acting alone - he had been corrupted and possessed by the "Sha of Pride" which is revealed to be Y'Shaarj - one of the Old Gods.
After Garrosh is defeated and Y'Shaarj's influence is removed, Garrosh was captured and meant to be held for trial in Pandaria when, somehow, he escapes and finds his way back to Draenor as it existed 35 years prior to the current storyline. He took all of his war machines with him, rescues his father from drinking the Blood of Manoroth, and essentially saves the Orcs from being enslaved by the Burning Legion.
But the Orcs are now formed up as the Iron Horde, using the technology that Garrosh brought with him, and they build the Dark Portal, fully intending on invading Azeroth (as it existed 35 years prior) using the war machines that the Goblins helped design and construct. Gul'Dan is pushed aside but later turns into a major force in the Draenor expansion. Garrosh is slain by Thrall. Grommash - after murdering a lot of people - finally sees that he's been manipulated by Gul'Dan but by this point, it's far too late, and Gul'Dan manages to corrupt the other Horde chiefs by having them drink demonic blood. What's meant to be Hellfire Citadel becomes corrupted by fel influences, and it's up to everybody to smash everything and set things right.
Archimonde has to be defeated yet again but in the process, Gul'Dan gets sucked into the twisting nether and disappears.
In Legion, we are finally allowed to have Artifact-level weapons which can be tuned up and customized.
And Legion will introduce a new class: the Demon Hunter, which can only be played by Elves (Night Elves, Blood Elves.)
Warlords of Draenor Opening Cinematic:
https://www.youtube.com/watch?v=TLzhlsEFcVQLegion Opening Cinematic Teaser:
https://www.youtube.com/watch?v=hmHY6hERT3sLegion Overview:
https://www.youtube.com/watch?v=N6CWue7voA0