Khorne

Classes rumored to be things like chaos marines, demon host, cultists

Yep. Its funny because I said this yesterday that it would be Khorne for sure since it is after all, Word Bearers who are the main Chaos Space Marines.

I look forward to hour upon hour of:

MAIM KILL BURN!
BLOOD FOR THE BLOOD GOD!
SKULLS FOR THE SKULL THRONE!

Not necessarily; Word Bearers are the main Chaos force. They utilize a lot of cultists. Or at least they used to anyway.

Cultists and daemons.

I'm not a Chaos player but aren't Khorne Beserkers an option for all CSM now? So, World Eaters might be a purely Khorne Army but Word Bearers can have berserkers now too? But, the Khorne Berserker on the DMO page is in World Eater colors... so I don't really get it... like I said I'm not a Chaos player and I mostly just paint these days.. so my absence from the local GW store has limited my current knowledge.

All Berzerkers are World Eaters. But they will fight amongst CSMs of other legions.

well, all i know is IM GANNA EAT UR SOUL, IM GANNA IM GANNA EAT UR SOUL!!!

In one of the trailers, it kind of looked like there were some nurgle demons as well! So Grandfather Nurgle may be making an appearance(if that unclean one looking thing with the chain axe was it)!

Rofl good point. That was a Nurgle demon for sure. Fingers crossed though, that all Chaos gods get some representation. I'm just guessing that the Word Bearers (Khorne) will be the 'promenant' evil in the game on launch.

Hopefully we'll get Nurgle, Slaanesh and Tzeentch expansions! Would be epicz! Conversely it would be quite cool if other Space Marine chapters participated as well.

Heres hoping they make the animosity between the two main Space Marine Chapters - Black Templars and Word Bearers quite apparent.

I hope we will have Plague Marines otherwise Word Bearers seem good to me. For the love of Chaos don't put only Khorne... See the mistake of Warhammer Online (only Tzeentch..)