Oh come on, really @ another early leak.
Though what we see is interesting. Nice to see I was right about madness. Skulk is pretty clearly an attempt at a U/B evergreen keyword, though I thought it was weird on that one Dragons of Tarkir megamorph card, and it's odd how it would be weaker on large creatures. I can't really comment on the other mechanics yet. I'm guessing the demon from the Duel Deck doesn't have delirium to hide that it's a mechanic.
A lot of the art seems much weaker than OG Innistrad, unfortunately, but hopefully there are still standouts.