This has already occurred and allows you to catch up with everything that was asked and revealed during the "Ask Me Anything" session with Aaron Dembski Bowden.
Aaron Dembski Bowden Ask Me Anything!
https://www.reddit.com/r/Warhammer/comments/7igatt/im_aaron_dembskibowden_ask_me_anything/
Also you can see where Bob went and captured most of the conversation that mattered on War of Sigmar
https://war-of-sigmar.herokuapp.com/bloggings/2627
Here are a few excerpts taken from here
https://imgur.com/a/YvMRQ