"There are plans for a new board this fall, but I'm not allowed to discuss the details and than to say that the changes are mostly around ease of use and flexibility, not performance. There is also a roadmap to make Arduino code and the IDE compatible with MUCH more powerful boards, but these are also not public yet."
I was hoping for more but I like the sound of making "Arduino code and IDE compatible with MUCH more powerful boards"! I like the IDE and the programming language that comes with the Arduino. A more powerful board means a more capable robot controller.