mAd4milk is working on a CMS called MooFlex. Here is a link to some MooFlex screens.
“Right now we’re developing mooflex, a simple and flexible content management system: with mooflex you can build several types of websites like simple portfolio showcase, blogs, or bigger multi-author portals.” -Mad4Milk

I should note that if you’re not yet familiar with moo.fx, a superlightweight, ultratiny, megasmall javascript effects library, which was created by mad4milk then you should check out!