Cross-post from my original G+ plus post, based on a The Register article: ARM just announced a new embedded core, the Cortex M7 with up to 400 MHz clock speed. The CPU is in general faster and has an improved pipeline, the real game changer four our drone applications is however the double precision hardware floating point unit. In particular for global coordinate systems (e.g. using GPS) having double precision available in hardware is quite enabling. Interestingly ARM decided to use 3D Robotics (and the Y6 and Iris graphics) and the PX4 project (which has its origins at ETH Zurich) as use case for how their new micro controller could impact the market.
As a a long-time onboard Linux user we are happy to see more and less expensive Linux single board computers becoming available, but interrupt latency, context switch overhead and I/O will remain challenging topics for all-Linux solutions, and so improvements in the low-cost micro controller domain will remain relevant and interesting.
After all, one of the recent novelties claimed by Apple for their iPhone was the addition of their motion processing co-processor, which turns the current iPhone generations into the same design pattern that we have been using a long-time in research: A low-latency IMU/autopilot coupled with a full-fledged mobile computer, combining the best of both worlds in terms of flexibility and latency.