What to expect at Microsoft's Surface event

IntroductionA new Surface Pro 4 is widely expected at Microsoft's big New York City event Tuesday morning, but that's just scratching the surface. The event will likely be part of Microsoft's larger play to expand the breadth and reach of Windows 10, and we may see new devices beyond the Surface Pro 4, Microsoft's flagship laptop-tablet hybrid. With Microsoft's ambitious plans to have a billion devices running Windows 10 in the next few years, here are some possible announcements that could begi