That appears to be the case, however, it doesn't appear the coach composition has been announced yet. We just saw that appear for 12869/70 which is now running with 3E. Mail should see it shortly. I'm curious as to how it will be done on 12810/09... would it retain all current 3A and just replace some SL with 3E, or a combination. It appears, 12869/70 got sleeper replacements.