And so it opens.

Though the back cover's dark and light layers remind us of something a Stormtrooper would have in his arsenal, we're more interested in the cryptic markings we found:

GPS ANT V2.0 2012/04/20

NFC ANT V2.0 2012/05/09

WIFI ANT V3.0 2012/05/25

We're purely speculating here, but we think these are antennas that were made somewhere between late April and late May.