Alongside the reveal of the HoloLens developers kit and the new version of the Band wearable, Microsoft refreshed its Surface Pro, in addition to adding a new laptop to the line. The Surface Pro 4 brings new processors, a higher resolution screen, and a new pen to the now 12.3-inch device. The Surface Book is a larger convertible device, with a 13.5-inch screen, with detachable screen.
