Windows, Windows, Windows. It sure has been a busy day for Microsoft. If you've upgraded to Windows 8.1 from Windows 8, you're good to go almost immediately. It's really easy to get the latest release. But what about those of us who had the Windows 8.1 Preview? There has been talk about not being able to upgrade as Windows 8 keys won't work, etc. but there's light at the end of the tunnel.