If you live in the United States and are looking to purchase Metroid: Other M, you might want to look at at preordering at Gamestop. They updated their listing for the game saying that consumers who preorder the title will receive a collectible art folio with 16 cards inside. You can get a quick look at the preorder bonus after the jump.
With Metroid Prime Trilogy, Gamestop had quite the preorder bundle. Unfortunately, they quickly ran out of stock. I’m not sure it will be the same with this one, but it might be a good idea to pick up your copy, along with the preorder bonus, early on August 31st when the game launches.
Hopefully, like with Metroid Prime Trilogy, more preorder bonuses will be added as we get closer to the release date.