Hi
The features that get more attention are GNOME 3, systemd, dynamic
firewall, consistent device names and boxgrinder. I think we can
throw in screenshots of Firefox 4, Libreoffice, Virt-manager and
SELinux troubleshooter and leave the rest out to keep it simple.
http://fedoraproject.org/wiki/F15_one_page_release_notes
Rahul