
Microsoft CEO Satya Nadella speaks at an event demonstrating the new features of Windows 10 at the company's headquarters in Redmond. (Source: AP)

A model wears the Microsoft HoloLens as he scrolls through a virtual Windows menu. Microsoft unveiled the holographic lens device that allows users to see three-dimensional renderings of computer-generated images. The device has no wires and looks like a visor. It ups the stakes in the emerging market for virtual reality, being targeted by Facebook Inc's Oculus.Lens. (Source: Reuters)

Lauran Carter of Lionhead Studio demonstrates a video game at an event demonstrating new features of Microsoft's Windows 10 at the company's headquarters. Executives demonstrated how they said the new Windows is designed to provide a more consistent experience and a common platform for software apps on different devices, from personal computers to tablets, smartphones and even the company's Xbox gaming console. (Source: AP Photo)

Microsoft engineer Alex Kipman releases a miniature helicopter designed on a hologram device and then created on a 3-D printer at an event demonstrating new features Windows 10, at the company's headquarters. (Source: AP)

Microsoft's Joe Belfiore, left, smiles as he tries on a Hololens device with colleagues Alex Kipman, right, and Terry Myerson following an event demonstrating new features of Windows 10 at the company's headquarters. (Source: AP)

Microsoft's Terry Myerson, executive vice president of Operating Systems, speaks at an event demonstrating new features of Windows 10. (Source: AP)