This one uses the default wallpaper design. For F16, this was created by Zachary Snyder (Sadin) from the Fedora design team. It still needs a screenshot; Sadin is actively working towards this.
(For Fedora 15 this was GNOME 3)
(For Fedora 15 this was Fedora Electronic Lab)
(For Fedora 15 this was a FUDcon photo)