Microsoft expands Windows 10 to Lumia phones, new Surface Book laptop

Microsoft is banking on a thin and powerful Surface Book laptop and fresh Lumia phones to make Windows 10 sexy.

Windows 10 has generated positive buzz ever since Microsoft released its latest operating system software ten weeks ago. Reviews have been favorable. And Microsoft says that 110 million devices are already running Windows 10, with over 1.25 billion visits to the Windows Store.