Nathan Rice who I first came into contact with through iThemes and at WordCamp Dallas 2008 has moved on to a new venture called Modthemes. Modthemes is a fresh new venture that offers commercial GPL themes for WordPress with Bryan Hauer as CEO. Right now, there is only one theme available with another on the way.
The WordPress community has benefited greatly from his contributions in both themes and plugins. I want to wish the best of luck to Nathan on his new career path.