Also at the bottom of the new website they are talking about other bundles that are coming out for the factions in the book together with Shadow and Pain together with images which probably show the content
Idoneth get 2x Allopexes and an Akhelian King
StD get 3x Chaos Chariots
Stormcast get 10x Judicators, a set of Gryphhounds, the ETB Castigators, and a Lord-Veritant
Cities get a Sorceress on Black Dragon, 20x Darkshards/Dreadspears