A simple, white, two column, fixed width theme
WordPress Mobile Theme

A feature rich theme designed for mobile browsers. Key features include custom colors, defining your own width and the ability to create dynamic images in the front page.
5 Spring-Inspired WordPress Themes

It’s spring, and there’s no better way to celebrate the end of another winter than to

More at: http://weblogtoolscollection.com/archives/2010/04/05/wordpress-theme-releases-for-0405-2/