Handoff is one of the best features under Continuity. Apple's OS X Yosemite website states: "Handoff works with Mail, Safari, Pages, Numbers, Keynote, Maps, Messages, Reminders, Calendar, and Contacts." However, Apple doesn't state that it works with FaceTime calls and iPhone voice calls. It would be really helpful if they can extend the Handoff feature to work with these. Having the ability to switch from a FaceTime call in progress on a Mac to an iPhone and vice-versa would be really convenient and result in a truly seamless experience. I would appreciate if some of the developers testing the Yosemite and iOS 8 DP1 can submit a request for this feature to Apple. Thanks!