You may or may have not “upgraded” to Windows 8 and may or may not ever plan to. If you are planning on buying a new Windows computer then you will be stuck with Windows 8 unless you format the drive and put a different version of Windows or a whole other operating system on it.
You may have also heard about Windows 8.1 which brings back the Start button but not the Start menu which is borderline pointless. But it will let you boot to the traditional Windows desktop if that’s what you like to see when you first log in.
If you are already running Window 8 then you will be able to upgrade to Windows 8.1 for free but if you don’t then you will have to pay. Starting on October 17th you will be able to download Windows 8.1 or buy it on a DVD for $119.99 for the Standard version and $199.99 for the Pro version which will let you connect to a corporate network and use features such as Remote Desktop.
As of now Windows 8.1 is an upgrade only but when the 17th comes around it will be available as a full download for clean installations. If you are doing an upgrade then it’s best to upgrade from a Windows 7 computer since Vista and XP upgrades are not recommended and may not work that well because files, settings and programs will not transfer.