Developers have been combing through the recent build of the iPhone OS SDK and have found multiple new references to multitasking in a few files. The below mention of a "multitasking dialog box" but one example:
Many of Apple's built-in applications already multitask, including phone.app, iPod.app, Safari.app, Mail.app, etc. so theoretically, the dialog box in this case could refer to current functionality.
Thanks AL!