If Microsoft’s pushy upgrade notifications weren’t enough to compel you to install Windows 10, then maybe a looming deadline is. Windows 10 will no longer be a free upgrade after July 29th, a year after the OS was released and shortly before its anniversary update rolls out. The company revealed the features coming out with the anniversary refresh during Build 2016, and they include advanced gestures, new Cortana commands and the merged version of the Windows/Xbox One app stores.