Microsoft’s Build developer conference officially kicked off on Wednesday in San Francisco, with CEO Steve Ballmer delivering the keynote address. Much of the three-day event will focus on courting developers and explaining how they fit into a new world that has seen Microsoft go from a software company to a software and hardware company. But another big part of Build will be the release of a preview version of Windows 8.1. Launched eight months ago, support for Windows 8, both on the consumer and the developer side, hasn’t exactly been strong. But Microsoft is looking to address some of the early criticisms of its overhauled operating system with Windows 8.1. I got a chance to see what’s in the works at a media event yesterday. Below, you’ll find five of the major features that are coming to Windows 8.1, which will be released later this year.