https://www.youtube.com/watch?v=PTBXTDkJPiA
Now is the time of Mortal Empires. Available 26/10/17 free of charge for all owners of both Total War: WARHAMMER I & II.
View the Steam page here: http://store.steampowered.com/app/617810/Total_War_WARHAMMER_II__Mortal_Empires/