The Gnome project announced the release of version 3.12 yesterday which is a major release. Unfortunately, unlike KDE, the release is not yet available for Ubuntu, Arch Linux or openSUSE. Only way to get it is by using Fedora which, in my opinion, has really become extremely stable – except for the extremely confusing partition manager. If you want to install Gnome 3.12 on your Fedora box, you can safely use a repository created by Red Hat developer Richard Hughes. Check out instructions here.