reduced the size of some of the holes so you can cut a thread in it (mount the arms to the bottom plate, mount the spacers for the top plate without nuts)
resized some of the openings
smaller landing gear (save some weight)
mount for small FPV camera
support for the FPV antenna added an even smaller landing gear 15.11.2014 different landing gear that mounts with the screws from the arm modified the arm so the motor cables go straight into the frame