When I was making my resort reservation a few weeks ago, the CM noticed that I had already booked Be Our Guest one night for dinner. I mentioned to her that we were just making alternate plans for our ADR's that were not included on the 2013 dining plan. She informed me that every restaurant that was on the dining plan for 2012 will be on the dining plan for 2013 and that the website had not been updated yet.
The CM seemed to be well informed of numerous things while I was making my reservation so I would hope that she gave me accurate information regarding this as well. And as mentioned before, this happens every year!