We’ve added two new themes for you to work with.
Clean Retina is “a Simple, Clean and Responsive Retina Ready WordPress Theme which adapts automatically to your tablets and mobile devices.”
It has lots of theme options so you can customize, including nine home page layouts, five post layouts, a featured slider, social icons, webmaster tools, custom backgrounds, headers, menus, and more.
To use any of these, just go to your Appearance::Themes dashboard panel and run the preview. Most customizations aren’t available until you activate it; but you can always roll back to your current theme if you don’t like it.