Meh on the concept; meh on the art.
The whole concept of paying $20 for a rules preview bothers me.
As for the art, it's better than the average 3E art in someways, but (1) that sword looks like a light saber, (2) what's with those daggers?, (3) the horns are way over-played on the tiefling (a problem I have with all of the tiefling art), and (4) we still have a Hooker Plate (TM) problem with that rogue's outfit. Adventuring in high heels, are we? Blech.
EDIT: I prefer the pencil sketch, because it's not obvious the sword is glowing green.