STMicroelectronics has announced a significant expansion of their STM32 ARM Cortex
product family:

http://microcontroller.com/news/arm_cortex_stm1.asp

New features include five USARTs on one microcontroller, a DAC, new memory interfaces,
and up to 512KBytes of Flash. Microcontrollers in this product family draw a miserly
36mA at 72MHz (core) run mode.

This original announcement is here:
http://microcontroller.com/news/arm_cortex_stm.asp

Today's announcement represents a fulfillment of ST's promised roadmap.

- Bill Giovino
Executive Editor
http://Microcontroller.com