Description of problem: The release notes for the F9 beta talk about being able to use a persistent live image via "--overlay-size-mb". However, at least on the KDE livecd, the version of livecd-iso-to-disk doesn't include this option. This will probably be fixed for the final version, but I found it confusing.
Whoops, yeah -- it gets copied in and the version on the box I was building on was old. You can grab the new enough version of the script from http://git.fedorahosted.org/git/?p=livecd;a=blob;f=tools/livecd-iso-to-disk.sh;h=0302bcf70e4596ab7f195b00de4abe7106c9d346;hb=HEAD