Here's a link to the rumoured book covers and some of the new Daemon miniatures. I think they're looking pretty good - especially the book cover artwork and advertising (the book cover is actually the Warhammer 40k version, let's hope the Fantasy one is as inspiring).
I particularly like the look of the Herald of Khorne on Juggernaut (hero level bloodletter).
Chaos Daemons / Daemons of Chaos Pictures and Photos
z7.invisionfree.com/wyrmling_x/index.php?showtopic=3267&st=405
Oh no... please don't encourage me to collect yet another army !!!