Hello,
I'm sorry for any inconvenience caused in this regard. I've checked the product detail page on Amazon.com, and it appears the item is not currently eligible for this shipping option.
We only offer the Release-Date Delivery option when we know we can get the item from our suppliers in time to meet our delivery promise to you. It is possible that this item will become eligible as the release date gets closer and we've confirmed our inventory.
Also, please be informed that once the order is placed it is not possible for us to change the shipping method to release date delivery. To help make up the delay, I've upgraded the shipping method to One-Day at no additional charges to you, and the new estimated delivery date is June 14, 2012.