From the announcement:
Brutal and barbed, or covered in sickening sores, the new reinforcements for Daemons are available to order on games-workshop.com. The Seeker Chariot of Slaanesh kit, which can also make a Hellflayer of Slaanesh, is a mixture of eye-wateringly sickening spokes, claws, threshing blades and hooked whips. Two boxes can be combined to create a barbaric Exalted Chariot, which churns enemies into a fine red mist. There are new plastic miniatures for Flamers of Tzeentch, sleek and horrific Screamers of Tzeentch, sore-ridden Plaguebearers of Nurgle, and we've even new Citadel Finecast kits such as the amazingly detailed Blue Scribes.
These models can be used for both Warhammer and Warhammer 40,000 collections. What's more, you can use Chaos Daemons as allies for a variety of Warhammer 40,000 armies, so this is the perfect excuse to add some stomach-churning creations to your existing collection.
Head over to games-workshop.com right now to see what's available. Don't forget to pick up a copy of this month's White Dwarf, as it will be accompanied by a mini-booklet containing all the rules for the new Daemon models.