Welcome to this morning's edition of "First To Know," a series in which we keep you in the know on what's happening in the digital world.
Today, we're looking at three particularly interesting stories. The Windows 8.1 preview is available for download starting on Wednesday, and it brings some familiar features to Microsoft’s OS. Microsoft also announced that PC users and developers who want to use the new Kinect will have to buy one specifically for the PC. And in Apple news, developers uncovered another nifty feature in iOS 7: head-based accessibility.
Check out the video above for more on these stories.