I tweaked the layout a bit, but if you want to use these packages, it should be as easy as downloading the new repo file here:
http://spot.fedorapeople.org/scribus-1.5/scribus-1.5.repo
Put it into /etc/yum.repos.d/
Then, yum update scribus.
I mostly do this as a convenience to Mo, but if you poke me politely, I can probably be coerced into updating them from time to time.