Microsoft is working on a new version of Windows, which is expected to be available sometime this year.
It's codenamed "Windows Blue" and a lot of details about it have leaked, including an early version that several people were able to install on their PCs and Windows tablets.
That version showed that Microsoft is fixing a lot of stuff that people really hated about Windows 8.
That's important because response to Microsoft's big new operating system, Windows 8, has been pretty underwhelming.
Windows Blue could be officially called Windows 8.1
Windows Blue will be more like a big update to Windows 8 than a brand new operating system.
It could be called Windows 8.1. That name comes from an image leaked on the Polish Windows message board at winforum.eu which showed a version of Windows called Windows 8.1 Pro.
Windows Blue could mean 7-inch tablets
Most experts believe that Windows Blue will lead PC makers to build smaller, less expensive 7-inch Windows tablets.
When Windows 8 first shipped in October, it could only support 10.1-inch, or bigger, screens.
Microsoft just quietly changed its rules for manufacturers to include a new resolution for Windows 8 touch screen devices: 1024 x 768 pixels. That's the same resolution as Apple's 7.85-inch iPad Mini.
Windows Blue won't be Windows Phone
One thing no one expects is that Windows Blue will be used as Microsoft's next phone operating system, currently called Windows Phone 8.
Microsoft deliberately took a different path from Apple in that it turned its PC operating system into its tablet operating system and left its phone as a separate OS. (Apple uses one OS for its Mac PCs and another, iOS, for the iPhone and iPad.)
Microsoft is not likely to merge Windows Phone with Windows 8 for Windows Blue.
See the rest of the story at Business Insider