On the one hand, of course, we should applaud such a move by restaurants, especially of the fast food variety. (Check out the book Fat Land to see how such unhealthy diets infiltrated schools and affected children's health.) Any step is positive.
On the other hand, I find it difficult to believe that even a move such as this will have much of an effect on children's health or diets.
Plus, it's worth noting that McDonald's, KFC, and many other fast food restaurants are not signing up to be part of this program, according to the article.