In White Dwarf September 2016 they had cards for "Slaughterpriest with Hackblade and Wrath-hammer" as well as "Grombrindal The White Dwarf" (a repackaged Unforged)
On Saturday the 24th of September GW launched pre-orders for:
Warhammer Quest Arcane Heroes: models and rules for Grey Seer, Chaos Sorcerer, Knight Heraldor, Sorceress, Skink Priest. But again no cards included.
Warhammer Quest Silver Tower Hero Cards: all the cards previously available in the app and White Dwarf apart from Grombrindal The White Dwarf and the Branchwych, as well as all the characters in the expansions Mighty Heroes and Arcane Heroes.
All of which means that you could now field a team of four characters entirely for:
Stormcast Eternals: Knight-Azyros, Knight-Heraldor, Knight-Questor, Knight-Venator, Knight-Vexillor, Lord Castellant, Lord-Celestant, Lord-Relictor
Khorne Bloodbound: Aspiring Death Bringer with Goreaxe and Skullhammer, Bloodsecrator, Bloodstoker, Exalted Deathbringer with Ruinous Axe, Exalted Deathbringer with Impaling Spear, Skullgrinder, Slaughterpriest, Slaughterpriest with Hackblade and Wrath-hammer
Fyreslayers: Fyreslayer Doomseeker, Grimwrath Berzerker, Auric Runemaster, Battlesmith
Duardin: Warden King, Runelord, Cogsmith and Unforged
Aelves: Mistweaver Saih, Tenebrael Shard, Assassin, Black Ark Fleet Master, Loremaster, Sorceress Nomad Prince, Branchwych
What I would like to see next would be a dungeon expansion with new tiles and new Dungeon, Skill and Treasure cards perhaps for Nurgle's Garden. I think they should do them for each of the Chaos Gods as they all have plenty of demons. If wishes were horses I'd also love a generic castle that looks a bit more human in origin.