Hmmm...I don't know, looks like a guy the size of a sumo wrestler has sat on the hood and squashed the front-end as a result. Maybe it was this fat dude getting out of the back of the F30 that sat on it:
http://www.f30post.com/forums/showthread.php?t=331386
Haha.
But on a serious note, the F20 looks marginally better (then my first impression) with certain angles and color, although it still looks out-of-proportions under most angles. And as someone said here, this is only a F30 render, the real thing should have better proportions. BMW aren't going to screw around with half-ass designs on their top seller, would they?