No difference in appearance. If I am not mistaken the redefined board has been flashed to the most recent settings. For instance, there will be the flickering yellow setting that allows you to switch eye modes from break beam to reflective. I don't think there is the flickering yellow setting on the previous models of virtue boards. I also remember that there were a few other settings that were on the redefined virtue board.
All the information for the current board should be here