STMicro has done it again... this time readying their ARM Cortex-M4 MCU (with hardware floating-point, DSP instructions and compatibility with Cortex-M3) for production in early 2011. In addition, they're also expanding into the F-2 series, which features an adaptive real-time memory accelerator to achieve a performance of 150 Dhrystone MIPS when executing code from flash at 120MHz (the maximum possible for the Cortex core).
All the above devices will remain software and pin-compatible!
Now it will be possible to upgrade the CPU on some existing IMU/AHRS/MARG/INS designs, so that a true Kalman filter can be implemented with floating-point support!
if you want to read the full press release.