One of the biggest changes Microsoft has made in Windows 8.1 is the ability to use the desktop more often. In the original Windows 8 the desktop was treated like a black sheep: there if you needed it, but only if you really needed it. Microsoft has realized that the desktop is better for some things, which has led them add new desktop options into 8.1.
One new feature that we have talked about in the past is the ability to boot to the desktop instead of the Start Screen. A new discovery in Windows 8.1 RTM shows how Microsoft is taking that even further. In the Taskbar and Navigation settings you can see the option above: “when I sign in or close all apps on a screen, go to the desktop instead of Start.”
Checking this box will make the desktop the first thing you see when you sign into Windows, and it will also take you to the desktop whenever you close a Metro app. Basically it just makes the desktop your default landing page. We imagine a lot of Windows 8 users with keyboard and mouse setups will select this option, while touchscreen users will keep it off. That is exactly how Windows should work.