LinuxBSDos.com posted a review on Fedora 17 KDE
Fedora 17, code-named Beefy Miracle, is the latest release of Fedora, a Linux distribution sponsored by Red Hat, Inc. Though the main edition uses the GNOME 3 desktop environment, the Fedora Project offer Spins that use other major desktop environments.Fedora 17 KDE Review
So aside from the main edition, there are Spins that use KDE, LXDE and Xfce. And besides the Spins for those desktop environments, there are special-purpose Spins, such as the Security, Games, Electronic-Lab, Design-suite, Scientific-KDE, SoaS and Robotics Spins.