Hi,
F21 is also a target (Rich will fix the blog post)
https://repos.fedorapeople.org/repos/openstack/openstack-juno/fedora-21/
And yes, the RDO team care about having a rock-solid packaging on Fedora.
I've been dog-fooding our latest composes on openstack and personnally
plan to use this occasion to test further our alpha images.
Regards,
H.