This will require unlocking the Fedora 8 release in bodhi. I'd be happy to do this when the time comes, but just for reference, here is how to do it (on releng1):
{{{
$ sudo su - bodhi
$ cd /srv/tg/bodhi
$ tg-admin --config=prod.cfg shell

Release.byName('F8').locked = False
}}}

F8 updates were pre-staged before the release. This ticket is all set.