Ok, so I just pre-ordered Dishonored from gamestop.com and it said that if I chose USA Overnnight shipping that they would guarantee delivery by the street date 10/9/2012. The problem is, when I went to choose a shipping method 1 Day shipping was the best option I could find for $9.99. I double checked my order status and even checked the shipping methods again and there was no option for USA Overnight delivery. My question is, will I still receive my copy of Dishonored on 10/9/2012?

Probably. It can't imagine a game you pre-ordered would arriver after the release date.