Latest beta version of iOS point to initiating FaceTime calls via email address

There is strong evidence that iPhone 4 users will be able to place FaceTime phone calls to users of the upcoming, yet unannounced, latest versions of the iPod Touch and future iPads that will incorporate front-facing cameras via email address. The latest beta version of iOS 4.1, which was released early in the week, provide some argument to this functionality which essentially adds a new option in the iOS “Contacts” app. Since iPod Touch devices won't have a phone number attached to them, which the new version is expected to be announced next month, the email option to initiate a FaceTime call is looking to be made available some time down the road. Additionally it'll also be able to bridge future iOS devices, like a newer iPad with a front-facing camera, with iPhone 4 users. However, it will be interesting to see how Apple will work around initiating FaceTime calls to the correct contact when a single email address is associated to multiple contacts.

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source: MacRumors