A discovery in the iPhone 4.0 beta firmware may have helped confirm talk of a front-facing camera on a future iPhone model. Using either the iPhone app iStat or the external Activity Monitor development tool shows a reference to an "iChatAgent" process that normally only shows up on regular Macs. Since iPhone 4.0 doesn't have an iChat equivalent of its own as of the first beta, it's implied by TUAW that the process would be used for video chats.
