Today Apple posted a guided tour of the iPhone 3G and iPhone 2.0 software. iPhone pricing has also been announced.

AT&T retail stores will open at 8am local time on July 11, existing customers who don’t qualify for an upgrade will have to pay $399 for the 8GB model or $499 for the 16GB model. Customers who don’t want to extend their current contract will pay $599 for the 8GB model and $699 for the 16GB model. Current AT&T customers who want to upgrade to the iPhone 3G will have to pay an $18 activation fee while new AT&T customers will be charged a $36 activation fee.