Well, this is interesting. Looks like Samsung is showing some home court love to their homeland of South Korea with the addition of a bonus battery pack found bundled inside their version of the Galaxy Nexus The higher capacity 2000mAh battery comes along with the standard 1750mAh, giving Koreans the option of a slightly thicker or thinner device. Also included, is an extra battery cover, most likely to compensate for the extra junk in the trunk, with a darker contrast. In the comparison picture with the Galaxy S II below, you can see the device gets a little thicker around the bottom, while still staying slim on top.
Android Phone, Galaxy Nexus Comes With Extra 2000mAh Extended Battery and Cover in South Korea