It looks like the usual strong art direction from Blizzard, my only complaint is that it does seem to have gone more cartoonish versus SC1's style, which was closer to the games cinematics style, something that always bothered me about Warcraft 3 as well. It doesn't look very graphically intensive, which was pretty expected considering their user base but it still looks great.
But, I'm excited otherwise, if a little disappointed with the art direction. Can't wait for more details.