Warhamer Quest: Silver Tower is coming soon, May 21st to be exact, and with a lot of models for Tzeentch. There are some great pictures out, and here is a look at a few of them and of course links to a lot more.
Just in case you missed the video teaser for the game.
... credit to the french forum
Information via War of Sigmar
edit : 51 models, 125€, double faced terrain (13) two books (rules and adventure) 2 to 4 players. Different objective (some are here for the LOOT!!!, other to kill the Gaunt summoner. Adventure book is 40 pages with 9 adventures.