Some interesting references have been found in the new Apple TV firmware which may hint at future functionality.
These findings come via MacTalk forum member matthew858.
Findings: ● New Remote Icon ● Runs iOS 4.1 ● Actual iOS app for Apple TV interface is called "Lowtide" ● MobileStorageMounter app suggests support for external storage ● Many propertylists for different types of DVD players ● AppSupport.framework ● FTServices.framework (FaceTime Support?)