Updating fedora core 4
Just live with this fact and stay up to date as long as the distro stayed around, using As a new version comes out, you'd manually do a fresh install and take care to copy any data and configurations forward to the new system. This tool essentially just collected your setups and the names of the packages you installed and would assist you in applying them to a new installation.See @Joel Davis' answer for this technique as well.It replaces all of the currently recommended upgrade methods (Pre Upgrade and DVD) that have been used in previous Fedora releases.Anaconda, the Fedora installer does have not any in-built upgrade functionality in Fedora 18 or above releases. Currently, Fed Up is capable of upgrading Fedora 17 installs to Fedora 18 using a networked repository, similar to how Pre Upgrade worked.
Rolling software, instead, is continually updated, in contrast to standard release software which is upgraded between versions. So from a purists standpoint, Debian, Ubuntu, Fedora, are not "rolling releases".
Fedora Rawhide is also kind-of a rolling release, but I already knew that (and don't want to use it, if that's what you were referring to). This can lead to confused comments, such as: "distro-X is a rolling distribution if you use its development branch" — where distro-X is a standard release distribution.
Even in rare cases where the development branch is a rolling (versus the more common cyclical) development branch, this does not make the distribution rolling. Are you referring to using the DVD and letting anaconda update your exising system to the version on the DVD?
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.