Early iPhone 3GS upgrade to cost $399-$499

AT&T subscribers who purchased an iPhone 3G and wish to upgrade to the 3GS early can do so by renewing their 2-year agreement and paying $399 or $499 for the 16GB or 32GB for the new device plus an $18 upgrade fee, the mobile operator said today.

In today's WWDC presentation, Apple listed the new handsets as costing $199 and $299, and did not include the unsubsidized price.