Finally Microsoft announced the release of Windows 8.1 and you can download it for free from Windows Store if you are a Windows 8 user. If you are using an earlier version of Windows like Windows 7, Windows Vista or Windows XP, the Windows 8.1 upgrade will costs $119.99 for the regular version and $199.99 for Windows 8.1 Pro.
As you know Windows 8.1 is the first major update on Windows 8 family and the update includes several new and enhanced features including more customizable Start Screen, better multi-monitor support and a "global" search etc… You may have n number of questions related with upgrade, so I strongly recommend go through the FAQ session before you going buy and upgrade.
Starting today, Windows 8.1 will be available in packaged DVD at retail locations around the world and also it will be available on new devices.