He mentions later in the thread he works for a dealer, though in what capacity he doesn't specify.
He could have been a service tech who had attended a service school on the 2013 model changes. In the medium and heavy duty truck business, it's not unusal for the service techs to attend new model service schools to learn service information prior to their introduction. I've attended a few even though I was in sales in order to learn more about the product before it comes available to my customers. It gave me a better idea of whether or not the new product would profitably fit in their business.
Bill