Here's are some tidbits that may or may not have been posted by the time I get done here...Also an opinion or two!
Monsters/Animals/Enemies shown: DRAGONS! (and they all rock, the one flying looks AMAZING), Undead Warriors (remind me of Liches), Ice Wraiths, Bandits, wolves, Giants (impressive!), trolls (identical style to Oblivion), deer, spiders (fixed)
Races shown: all human/nordic in style and male except for one female (she's attractive believe it or not!), one Dunmer but it's from the rear and he's wearing a lot of armor...you can mostly just see his dark blue-grey arms. NO beast races shown but I heard they are still in. Can't wait to see the Argonians!
Armor shown: Very nordic and viking style shown. There is a metal helm with horns that curve down like this: http://www.wendytimm.com/images/Artwork%20pix/war-hornhelmet.jpg, the only differing armor looks very Elvish. Kinda dark brass color with a ton of detail. Battle-kilts confirmed
lol. The Dunmer is wearing a leather style armor with one pauldrin on the left. Maybe pauldron slots are back?
Weapons shown: Dagger (embedded in the torso of the Dunmer!), a couple long steel swords, one handed bearded axe, a gold mace with 4 "blade" sides (reminds me of the Oblivion elvish one handed mace), Giants appear to carry around a stripped tree trunk lol!, possible one handed staff (glowing blue on top) which is held with a sword in the other hand, bow and quiver on back, one of the undead warrior lich seem to have a two handed axe, a possible elvish styled (glass?) sword that's faintly green.
Art style and Graphics: The game seems to go for realistic, darker then Oblivion but with plenty of color flourishes, and the scale seems much more appropriate. The Giant looks big, a dragon flying through the air looks spectacular (probably my favorite shot), and the cities/ruins don't seem to be all flat areas with buildings like previous games. The one notable feature is a really high cliff that goes higher then the top of the picture even and has waterfalls flowing down with what looks to be ruins mixed in and a newer city in front of it. There is a LOT more diversity then I expected here. We get everything from a beautifully autumn time forest full of color, to a green forest full of pine trees, to the snowy mountain peaks we would expect. The one building interior seems to show lighting on objects, a chair for example casts shadows on the bar behind it.
(I may need to edit this later, all typed in one straight sitting)