if i get the iphone 3gs, and the iphone 5 comes out next month, would i still be able to upgrade?

If i get the iphone 3gs for $0.01 (via AT&T online) with a 2 yr contract in september, and the iphone 5 comes out next month (october), would i still be able to upgrade at the discount price, of $199 for the 16th gb and $299 for the 32 gb with a new 2 yr contract?
 
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