Fedora 18 has been released.

You can review the flavours of desktop iso's available for download here...

https://fedoraproject.org/en/get-fedora-options

The default desktop iso uses Gnome. Others available include KDE, LXDE and Xfce

The nearest download site for Gnome and KDE seems to be in Aussie at...

http://fedora.mirror.uber.com.au

http://fedora.mirror.uber.com.au/fedora/linux/releases/18/Live/i386/

Fedora-18-i686-Live-Desktop.iso 10-Jan-2013 04:48 889M Fedora-18-i686-Live-KDE.iso 10-Jan-2013 05:38 805M

http://fedora.mirror.uber.com.au/fedora/linux/releases/18/Live/x86_64/

Fedora-18-x86_64-Live-Desktop.iso 10-Jan-2013 04:49 916M Fedora-18-x86_64-Live-KDE.iso 10-Jan-2013 05:51 831M

-- Peter Reutemann, Dept. of Computer Science, University of Waikato, NZ http://www.cms.waikato.ac.nz/~fracpete/ Ph. +64 (7) 858-5174