The OpenPilot Revolution….
It’s a new breed of Autopilot using the STM32F4 Microcontroller, this is important as it contains a hardware floating point unit which is a huge advancement for hobby class autopilots, of course OpenPilot has been 32bit since day one, the FPU is another step up the performance ladder.

See it fly, read about the CC3D and more in this announcement by Project Leads:
http://forums.openpilot.org/topic/8804-the-revolution-is-coming/