Kick ass arts. Looks like the flamekin have chagned to something resembling ghastly arcboundcreatures, but instead by holding together with electricity, they look like walking lave flows with hardened pieces of lava scattered among their bodies to give definition.
*craps self* OMG, this stuff is awesome!!!1!1! the 2nd pic in 3rd art post looks like a zombie kithkin! and the one next to that is from the packaging, I think its a boggart. And one of those is like a twisted Wort!! I am freaking out, srsly.
Wow, that's a lot of art, even for our usual early-rumor-period blowout.
So what all does this tell us?
I see creepy versions of almost all our Lorwyn races (except, oddly, Treefolk.) The Kithkin and Flamekin seem to have gone through the most significant (and creepiest) physical changes, the elves the most significant wardrobe changes, and the boggarts honestly don't look much different.
This seemingly confirms that Shadowmoor will mostly follow the Lorwyn creature types, but I see what looks like a dragon and a demon in there. O_o (I think there's a zombie in there too.)
I have no idea what to make of the weird eye chick.
The mournful kithkin with his bottles of liquid reminds me of the way art was commissioned for cards like Burrenton Bombadier. Possibly this card deals with +1/+1 counters.
Whatever it is that the thing people thought was an ouphe actually is (I certainly can't tell), it's definitely not an ouphe.
The full-length art for Oona makes it at least somewhat more likely that she's being printed as a Planeswalker.
It would appear that we have arts for two more hideaway lands also. The big giant like green thing has forearms and hands that look like those on Mosswort Bridge and the big Kraken thing looks like Shelldock Isle
No sooner had I posted this but Viroid edited his post with the same observations! It looks obvoius to me that we will get a cycle of creatures based on the hideaway lands. The only questions I have is are they legendary and will they have abilities that tie in with the hideaway requirements?
The last one of the 4th batch (post #5) looks like a treefolk with two boggarts on it's shoulders.
I thought it looked more like a boggart version of that Mannequin card, but not really sure. Also, the first pic in the 6th batch looks like a insane/evil Giant that has been "treefolked".
Also also, the fourth in the fourth batch looks like Oona is communticating with someone a la God in Monty Python and the Holy Grail.
Also, I think treefolk will mostly die because of the eternal darkness (after all, trees need light to grow). But fear not, they're stiched together by fellow boggarts and ready to reap the harvest!
EDIT: More thoughts on the art:
Demons? Dragons? Redcaps? In my Lorwyn?
Sootkin riding a giant bat - new specter?
A lot of ghost and zombie-looking arts.
Why that sootking rides a wolf? Wolves are elvish creatures, right?
Some boggarts are going to burn some Wicked Man. I don't remember the actual name and date, but one celtic (or other) holiday is based on it.
Merfolk do look like Deep Ones.
Some hideous monstrosity you don't understand? It's probably an Elemental.
Man, I do like stiched treefolk. They look like scarecrows.
Some boggart wanted his new pair of gloves and a helmet NOW.