I can't seem to find this anywhere. Also is there a list of repositories for third party software apart from livna? and is there a better package manager like Ubuntu's for Linux?
Is there any reason you can't just use Fedora 15 which comes with Gnome3 already set up? Gnome 3 will not be available on Fedora 14 through official channels.
I looked for gnome3 packages on the Fedora people repository list and didn't find a gnome3 repository (there is however, a gtk3 repository).
Besides fedorapeople, an important 3rd party repo is rpmfusion