They're going to have them at Best Buy or sure, most of them are doing midnight launches but you're goign to want to check and see if they're not all reserved.  

You may also be able to go to a Gamestop or EB Games and still put a reserve on one.  

7 Eleven actually is going to be selling them too, I'd also think about Wal-Mart, though wherever you go I'd get there early :)