CoolerMaster is showing off their now finished versions of their N-Series of cases. Prototypes were shown back at CES in January, and were slated to ship this month.  

The N200 supports both Mini-ATX and Micro-ATX motherboards.  The N400 supports both Micro-ATX and standard ATX motherboards. The N300, N400, and N600 supports both Mini-ATX and Micro-ATX motherboards. 

All the cases feature support for USB 3.0 and have front audio support.  They are constructed with a steel body, plastic bezels and mesh.  All four cases should be shipping shortly.