[Users] Ovirt Support life (timeframe) - upgrade path ?

Hi. As Fedora the default system that Ovirt is packaged for does this mean that Ovirt will have the same (short) support life of 18 months ? I ask as that is a bit short to have in enterprise .. I.e if I install Ovirt in Fedora 16 will support life run out when Fedora 16 runs out or will I be able to upgrade Ovirt/Fedora to the next version? Are there going packages for Centos ? If so will they be supported longer ? If this information is out there already can you point me to the right direction ? Regards