Windows 8 customers can update to Windows 8.1 for free in the Windows Store, starting October 18th, 2013. With the return of the Start button, new ways to personalize your Start screen, and more ways to do more things at once, the new Windows gives you one experience for everything in your life. http://msft.it/NewWindows
You can learn more about the new features in Windows 8.1 here.
Take a look at the ad below...