From Fedora Project Wiki

New Login Screen

The GDM login screen has a facelift in Fedora 16, matching the GNOME 3 look & feel. There are some pretty slick animations you'll notice while interacting with it as well.

F16-tour gdm-newlook.png

New File Previewer

The Nautilus file manager has a new file previewer called 'sushi.' You can try it out by selecting a file in Nautilus and hitting spacebar to activate the preview. Here it is previewing a photo.

F16-tour nautilus-sushi.png

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