On the front, obviously not much. Which is a good thing imo, since I love the design of the GNex and was hoping they wouldn't stray too far from it with the next Nexus phone. And the addition of the metal (I hope) rim is tasteful and adds to the quality feel of the phone.
The back, which was horribly ugly on the GNex, looks completely different. Looks like a much more solid build quality, which is exactly where the GNex failed. All in all, looks wise, an updated version of the GNex with the changes in all the right places = best looking Android phone to date.
As for LG making them, as long as the phone is good I don't give crap about who's made it. It should be especially irrelevant with a Nexus product. Android Central just published a very good article on that particular issue btw:
http://www.androidcentral.com/brand-loyalty-and-blind-hate