Atlas has announced (March) a new run of B30-7's with the numbers 863, 866 and 870. They did 864 and 866 in 11/2001. Thus I suggest that we need to email Atlas to do another number (from the roster of 863-870) instead of duplicating 866 again (I have done so).
I sent an email to Atlas asking them about this. I also asked if they change the road number to let me know what the new road number will be. I will post if I receive a response.