Aaron Douglas, writing for his blog The Dangling Pointer:

Apple introduced the ability to record the screens of iOS 8 devices with QuickTime Player in Mac OS X Yosemite. You may have already been familiar with the ability to do a screen recording with QuickTime but now those screens includes any of the iOS 8 devices you have connected with a cable.

Follow the instructions. It’s pretty straightforward.

One more thing:

Notice that Apple took the time to replace your device’s status bar with one being carrier-free and fixed at 9:41am.

This is a Steve Jobs homage. Brilliant.