Updating fedora core 4
According to the Upgrading topic in the wiki, there was a method where you could put a DVD in your system for the next version of Fedora, and Anaconda would attempt to upgrade your system.Having tried this method on numerous occasions I would not consider this to be on par with the available in the Debian/Ubuntu distros which actually worked very well.It replaces all of the currently recommended upgrade methods (Pre Upgrade and DVD) that have been used in previous Fedora releases.
update operates on groups, files, provides and filelists just like the "install" command.NOTE: This is no longer an option starting with Fedora 18 though so you've been warned. New in Fedora 17/18 is a tool called Fed Up (FEDora UPgrader) which purports to do "dist-upgrades" similar to Debian/Ubuntu distros.Fed Up (FEDora UPgrader) is the name of a new system for upgrading Fedora installs in Fedora 18 and above releases.None of the Red Hat distros prior to Fedora 17 included the ability to do dist-upgrades as you've asked.This had been a long discussed option on many peoples' wish list but had never been implemented.
A message in Gnome popped up that my system requires important updates.