Fedora 16 EOL

Apologies if this has been covered (I am a new subscriber to the list). I converted from ATRPMs a little while ago. Is there no more support for Fedora 16 and if not, is my best avenue to upgrade to Fedora 18 by first doing a DVD upgrade to Fedora 17 and then a FedUp Upgrade to 18? Are there any gotchas I should be aware of during the upgrades?