Windows 8.1 now available: Everything you need to know before you install

From Windows Blue to 8.1
The update was previously called Windows Blue for months ahead of its official confirmation. It’s not Blue any longer. It now goes by Windows 8.1.
When is the Windows 8.1 release date?
Microsoft has offered a Windows 8.1 preview release since 26 June, but the full consumer version is now available. Read more