A little less than an hour ago, emails were sent out to Xbox Live members titled "Your piece of the Halo 4 puzzle". Each email came with a snip of the official Halo 4 boxart, 32 pieces in all.
A fellow GAFfer, spawn031 (I believe the credit goes to him, he posted it) pieced all of it together! So, here is the boxart. Click to enlarge.
Boxart with Xbox stuff at top
Goldrusher's projected final boxart
And why not, Vire's edition, with the newest Xbox stuff at the top.
Got to say, that is some fine boxart.