If I'm creating a new virtual machine in virt-manager and already have an existing disk image (eg, from VMware or VirtualBox), I can select that as the disk for my VM, but I also have to select an installation source. I've been using a dummy ISO image and booting once and then removing it, but it'd be nice to not have to do so.
Available in RAWHIDE. Will be rebased to F13 post GA as well, but likely won't end up in F12.