Apple pushed iOS 4.1 beta 3 to developers earlier this week, and today, MacRumors found a feature that offers the strongest evidence yet that the company is planning to roll out FaceTime video calling functionality to future non-iPhone devices based on the iOS operating system. A new option in the iOS “Contacts” application allows users to make FaceTime calls using either a phone number or an email address. This would allow FaceTime compatibility with devices not associated with a phone number such as future camera-enabled iPads and iPod touches.