As part of OS X Yosemite's focus on creating a more seamless experience between your Mac and iOS devices, Apple's updating iMessage to keep conversations going. Now, it's not just instant messages from other Apple devices that show up on the desktop app, but also texts and multimedia that've been sent from other platforms (texts from your friends' Android devices, for example). Oh, and you can now make and take regular phone calls from your Mac when your iPhone is in range. As part of the new "Handoff" feature that means your computer and iDevice know exactly what the other is doing, a call to your phone will trigger a pop-up asking if you want to answer right from your computer. It works the other way around, as well, so you can make calls without touching your phone. And, what better way to show off the new feature than to call Dr. Dre live on stage? Show-offs.