Preupgrade vs other upgrade methods, caveats?

[Gordon Messmer]

On 11/18/2012 05:45 AM, Sergio wrote:
> Preupgrade isn't supported any more, AFAIK.

That's only true for Fedora 18 and later releases.  For the current 
release, PreUpgrade is still the recommended upgrade path:
https://fedoraproject.org/wiki/How_to_use_PreUpgrade?rd=PreUpgrade

For Fedora 18, yum is currently the only upgrade option.

Fedora should be getting a new upgrade tool called "fedup":
http://ohjeezlinux.wordpress.com/2012/11/13/fedup-a-little-background/