Mouser Electronics is stocking the Freescale Semiconductor 32-bit Kinetis Cortex-M4 microcontroller family. 

The Cortex-M4 processor is the latest embedded processor by ARM specifically developed to address digital signal control markets that require a blend of control and signal processing capabilities.

It is targetted at motor control, automotive, power management, embedded audio, and industrial automation markets.

The Kinetis product line consists of five MCU families with more than 200 pin-, peripheral-, and software-compatible devices.
 
Also available is a suite of development tools, including controller boards for Freescale’s Tower System and evaluation kits, as well as software tools from Keil and Micrium to enable rapid development of new Cortex M4-based systems. 

http://www.mouser.com/freescalekinetis/