Aye here's what we know off the top of my head.
Undead vs heroes. (barbarian,dwarf fighter,elf ranger,mage)
"2 tier" game box.on the top basic campaign and beginner game, with a removable panel to reveal a boox full of advanced rules to make it more of an rpg.
card tiles thicker and higher quality than old dkh.
material will be loka/mars attacks style pvc.that is to say very hard board game style plastic.(i have a loka piece from the open day and really, it feels just like polystyrene plastic to me)
several new races (Shapeshifters, lizard/fishmen, monsters , banshees.)
several other mini's spotted such as halflings and other dwarfs suggest some stretch goals , but this looks to be a small (by mantic standard) kickstarter with the game hitting somewhere around the £70 spot according to online speculation.
from what i can tell, it will be similar to heroquest in terms of co-op, in that you don't have to play nice.
Also, you need the password , Hjalgeir , to get on the spoiler site. (i asked, and yes, it is meant to mean password in dwarven.(dwarvish?dwarfish?dwarve?)