AT&T will be offering a break for those who recently upgraded to the iPhone 3GS before the iPhone 4 announcement. Anyone who got their 3GS anytime between May 7th to June 7th can either get rebate towards their next bill depending on the 3GS purchased ($50 rebate on 16GB & $100 rebate on 32GB) or exchange their 3GS towards the new iPhone 4. More details as you read on.
Customers who purchased iPhone 3GS May 7th through May 14th will have until June 14th to visit the original location of purchase and receive this one-time bill credit
Customers who purchased after May 14th will have 30 days to complete their price protection transaction by returning to the original location of purchase