I see this in release notes for 3.5:
"
If you're using pre-release repo you'll need to re-enable pre release repository:

[ovirt-3.5-pre]
name=Latest oVirt 3.5 Pre Release
#baseurl=http://resources.ovirt.org/pub/ovirt-3.5-pre/rpm/fc$releasever/
mirrorlist=http://resources.ovirt.org/pub/yum-repo/mirrorlist-ovirt-3.5-pre-fc$releasever
enabled=1
skip_if_unavailable=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-ovirt-3.5

and to run:

    # yum update "ovirt-engine-setup*"
    # engine-setup
"

but this leaves me some doubts...
I currently have RC3 (or 4, I don't remember exactly).
But if I walk through the pre-repo mirror, it seems to me that for example I will get

ovirt-engine-backend-3.5.0.1-0.0.master.20141009085636.el6.noarch.rpm   

while going through 3.5 repo I will get
ovirt-engine-backend-3.5.0.1-1.el6.noarch.rpm

Are they indeed the same?

Can you confirm that if I have a RC release I still have to use -pre repo to update to official 3.5.0?

Thanks,
Gianluca