Official Blizzard Quote:
BlizzCon: It's Wallpaper Tuesday! This time around we have the official #BlizzCon 2011 art piece for your decorative desires
The wallpaper highlights Diablo, the Lord of Terror, in his (her) newest incarnation for Diablo III. While we have only seen a few glimpse of the full figure of the demon, this wallpaper gives us a good and clear look at the form of his entire body. Just why he has such a slender build and what the mouths on his shoulders are is still up to speculation, we can only hope that the truth will be revealed Soon™. If you would like to get the wallpaper to adorn your own computer, you can head here to download it in a variety of resolutions.
We do not need to bring women model curves into this.
But if it makes more sense to the lore and if my sexist complaint is a bit narrowminded...
Then this is going to work just fine.
SPOILER
I HATE it. i really despise they way they have interpreted Diablo. Thats crap. I understand(and suspect like most) the rich and valid speculation that leah is corupted in D3 and becomes diablo but i do not see how that should impact on the demons form to the extent "IT" has what my GF termed as "child bearing hips" and looks about as scary as a blood elf. IMO it dosent matter who diablo corrupts male or female i think there shouldnt be such a complete change from a tough huge bulging bicep demon evil prime monster with big Foff horns sticking out of his back that look like some kind of dinosaur into a female cartoon character.
That just does not look like diablo, plain and simple. looks shit.
Judging for the black marks around the eyes, I'll say it's a pandaren.
Easy as 1-2-3