We ate at Teppanyaki on the Dining Plan in October. There were 2 changes that I am aware of.
In the past the menu included a Steak and Lobster dinner. Now the Lobster is considered an "Add On" and not included in the plan. You could pay OOP to add the Lobster to your meal. Initially, the menu included Sushi appetizers. They no longer include the Sushi appetizers in the plan. If you want the Sushi again, you will have to pay OOP.
We did not, in any way, feel restricted at this meal. It was good food and great fun and we found that anything that we wanted was included.
So only if Lobster and Sushi are important to you, will you feel a difference.
Enjoy.