The 2.29MB configuration utility lets you set up configuration profiles and install provisioning profiles as well as applications, and lets you get information about iPhones, including their console logs.
Configuration profiles are XML files that contain device security policies, VPN configuration information, Wi-Fi settings, APN settings, Exchange account settings, mail settings, and certificates that permit iPhone and iPod touch to work with your enterprise systems. full account of what this software does is available within this PDF document.
Apple TV 2.1 adds support for MobileMe and the new Remote application that will be free in the App Store for the iPhone and iPod touch. MobileMe now shows up in the Photo section and there is a way to connect with the new iPhone and iPod touch remote application under the Settings -> General -> Remotes section.
Finally, Apple’s Mobile Me service has been sighted in full operation during the day, but it’s intermittent – the service is presently non-functional.