"The new version includes updated versions of the Gnome, KDE Plasma Workspaces, and MATE desktop environments, and a number of Fedora "Spins" are available that support still other desktops, such as Xfce and LXDE."
Just to clarify this: GNOME, KDE, Xfce, LXDE, MATE, Cinnamon and Sugar are available as 'primary' desktop environments for DVD and network installs. All of the above except Cinnamon are also available as live images. Yet other minority/niche/t3h h4rdc0rez WMs/desktops are also available in the repos, including at least fluxbox and e16. I tested all the 'main' desktops (those listed above) for the Beta, and they all work.