Latest in line for the Zerg (though admittedly this probably should have come before the muta), the new overlord mutation, the Overseer. This one's pretty close to the in-game model, it sort of seems that there's a bit less room to move with some of the new units because they haven't really made an impression yet and I don't have much to go on.
3 hours, Sketchbook and Photoshop, this time I did
remember and there's a video up on youtube of this one, but I can't give you the direct link because dA thinks there's a fucking smiley in it, but it's on my channel page
so check it out.