Windows 10 is running on 110 million devices, Microsoft said yesterday as it introduced a new Surface Pro tablet, the Surface Book notebook and several Lumia smartphones, all of which run the OS.<br />"There are 110 million users running Windows 10 right now," said Panos Panay, the chief of the Surface team, during a two-hour presentation of the new hardware.<br />Panay's data point was the first time since late August that Microsoft has claimed a Windows 10 number.<br />More than a month ago, Microsoft said Windows 10 was on 75 million machines.