AT&T's online system is the latest to show white iPhone 4 model

However, the latest to be added to the list is none other than AT&T whose database blatantly shows the options for both the 16GB and 32GB versions of the white iPhone 4. As you can tell from the screenshot from AT&T's Online Account Management system (OLAM), the white variants of the latest iPhone model are out in the clear and in the mix with its brothers and sisters. Slowly but surely, its inevitable arrival is more than likely coming and we'd imagine that there are going to be some jubilant customers waiting for its official launch.
source: BGR