Iphone 3G upgrade to Iphone OS?

I just bought the Iphone 3G and i renewed my contract. I now want to buy the new iphone and i was wondering if they would let me upgrade to the new iphone because i bought the old on.

You should have waited. The iPhone 3G S has been rumored for a good while now. You can upgrade but they won't let you trade your phone in for the new one. That would be crazy on their behalf. AT&T and Apple announced that customers with an iPhone already and are planning on upgrading must pay an additional $100 for the iPhone. Meaning the 16GB would be $299 and the other would be $399. A shame they pull that on the loyal customers but they know they have most people hooked and people will buy it. They didn't charge extra for existing customers for the iPhone 3G. I'm on Sprint and will be in line for the iPhone 3G S 16GB when it releases to sign over to AT&T.