A few days late posting this, but here were the trains running on Friday, June 15, 2012:
#1 Walter E. Disney pulling the 100 series coaches
#4 Roy O. Disney pulling the 400 series coaches
And #3 Roger E. Broggie pulled the 200 series coaches for the morning Welcome Show.
Just two trains in operation for the day, but there never was much of a wait. Except when we were trying to board at the new Fantasyland station at about 5:30 in the afternoon. Didn't make the first train, although we were on the second train. Evidently by that time all the parents of young kids had had enough and were trying to make their way to the exit.