The latest version of Zen Suite can be downloaded from Softpedia
Zen suite, a theme compatible with GTK+ 2.x and GTK+ 3.x that aims to be simple, consistent, and visually appealing, is now at version 0.12.1.Zen suite 0.12.1 features a menubar, toolbar, and icons, is available for both GTK+ 2.x and GTK+ 3.x, is compatible with Xfce widgets and the Xfce notify theme, and it brings pre-configured color schemes (Zen, Zen-blua, Zen-griza, Zen-nigra, Zen-nokto, Zen-verda, and Zen-papero).
The dependencies are the usual ones: Murrine engine version 0.98 (at least) for GTK+ 2.x, and, of course, GTK+ 3.8 at least for the rest of the features.
Highlights of Zen suite 0.12.1:
• lightdm-gtk-greeter theming support has been implemented;
• A Zen-bicolor variant has been added;
• The GTK3 progressbar text color and fallback mode panel have been fixed;
• Various fixes and improvements have been added.
A complete list of features can be found in the official changelog. Download Zen suite 0.12.1 right now from GNOME.org.