Ok my first thought on seeing these models is this; anyone whose been calling that Sigmar Lord's mount a Battlecat is wrong. That mother****er is a dragon with no wings! My more detailed thoughts are;
One Lord-Celestant - Really liking this guy. He has a gothic grimdark look to him, yet also with an element of hope and awe that the Forces of Order finally have a group that can take the fight right to the Chaos Gods and make their slaves shudder. The Stormcast Eternals (LOVE that name). His mount is gorgeous, a drake or wingless dragon, and I love the ornamentation across both of them.
One Lord-Relictor - Liking this guy. A much more austere and imposing figure than his comrades, yet clearly the fantasy version of a Chaplain. I expect he will fulfill the same role both in-game and in-universe. The skull helm is beautiful, his icon is nice but perhaps a little bit much.
Three Retributors - Pretty damn good looking I think. The helmets are great and I like the more elite appearance these Stormcasts carry over their more common brethren. These will likely be TEQs and I especially like their great hammers.
Two units of five Liberators - Pretty sweet. Stormcast Eternals win the award for Best Looking Foot Soldier (Dark Eldar and Skitarii come in second place). Cool looking yet simple and unornamented enough to show that while they are the elite Angels of Sigmar, they are still basic soliders.
Three Prosecutors - LOOOOOOOOOOOOOOOVE THEEEEEEEEEEEEEEEEEEEESE!!!!! Double hand-hammers! Sweet looking armor. But most importantly; THOOOOOOSE WIIIINGS!!!!! I would buy a box of these solely for the parts and conversion opportunities. My Angels of Chaos are closer than ever.
One Mighty Lord of Khorne - This guy looks like a badass. I especially LOVE that cute Flesh Hound he has slavering at the end of his leash. And that axe is begging to be either used here or given to a Khornate Terminator Lord or a Daemon Prince. Also liking his facial sculpt, looks daemonic but also human enough.
One Bloodsecrator - Admittedly the model I like the least. That icon is just too much. The concept is nice, but that thing belongs on a Warshrine, not being lugged by one guy whose body weight in full plate armor would be less than the damn thing he's carrying. I do love the skull-made chestplate though.
One Bloodstoker - Liking it. Makes me think of the Rancor Tamer from Star Wars Episode VI only turned to Chaos. The whip is also pretty damn nice, could use it here or give it to a Dark Eldar Sybarite along with an Agoniser Whip to create this in-game; (http://www.imfdb.org/images/thumb/c/...azorWhip-1.jpg
One Khorgorath - Terrifying. This thing looks like a true Chaos monstrosity, not something random like Chaos Spawn or a Daemon, but rather something spit out from the darkest depths of the Warp and meant for nothing more than complete carnage.
Five Blood Warriors - Liking these guys. They look like classic Chaos Warriors but with a clear Khornate design to them, like what I think a Chaos Warriors of Khorne kit would have looked like if God-Devoted Warrior kits were available in addition to generic Warriors.
Two units of ten Bloodreavers - At first I didn't think i'd be a fan of these, but after seeing them I love them because they look like real marauders while also averting my greatest annoyance in fiction. Helmets, they have badass full-face helmets and that alone is enough to make them awesome in my eyes.
I will be getting this without a doubt, if this is the new Warhammer I want to be in on the ground floor right at the start. Also I NEEEEEEEEEEEEEED that Flayed One Flesh layer paint! I paint pale skin constantly and that pot would be perfect for my Dark Eldar Wracks.