AT&T posted their detailed Rate Plan for the iPhone 3G and they will start selling the iPhone 3G at 8am on July 11th in the U.S. A few more days to go before we can get our hands on the new iPhone 3G.

AT&T also confirmed that the subsidized price for new and current iPhone price is $199 (8GB) and $299 (16GB). These prices are specifically available to the following customers:

- iPhone customers who purchased before July 11
- Customers activating a new line with AT&T
- Current AT&T customers who are eligible, at the time of purchase, for an upgrade discount

For AT&T customers who are ineligible for the subsidized pricing, AT&T is offering an “early upgrade” price of $399 (8GB) and $499 (16GB). You can check your eligibility in your online AT&T account.

Finally, AT&T is offering an unsubsidized price of $599 and $699 at a later date as a “no commitment” price for individuals who do not wish to sign a long-term contract.

If you got more question, AT&T has posted some FAQ’s guide for existing and new AT&T customers.