Looks like the pantheon of the Chaos gods may be getting shook up. Checkout these passages in what appears the to be the fluff section of the the new Age of Sigmar rulebook.
7-11-2015 Via Twitters (OP Unknown)
Here is the part to pay particular attention too;
Looks like maybe Slaanesh should not have strayed from the path in the Age of Sigmar universe huh? I’m sure next weeks new rulebook release will clear this disappearance up, but for now all it’s a Slaaneshi ‘Who Done It’ mystery!
Bio: Virginia restless, miniature painter & cat dad. He blames LEGOs for all this, as there was something about those little-colored blocks that started it all. Spikey Bits sprung from Rob staying motivated to hobby on his backlog of projects, while sharing his knowledge with others during the early blogging era.
LEGO maniac and scale model hobbyist in the 80s turned miniature wargamer and trading card player ever since. He’s played every edition of Warhammer 40k and Warhammer Fantasy (since 5th Edition), but Titans of all sizes will always be his favorite! It’s even rumored that his hobby vault rivals the Solemnance Galleries, containing rulebooks filled with lore from editions long past, ancient packs of black-bordered Magic Cards, and minatures made of pewter and resin.