Ok, there must be a lot of traffic on the rewards site... it was really slow to load...just checked and there is no announcement. However, when I looked under the Theme Park benefits section, I noticed for the first time the inclusion of the word 'dining.' It could have been there all along and I never noticed it, or it could be something new (don't know, but certainly hope so). I find it interesting that the other categories (Meet N Greet, merchandise, tours) has a description of the benefits, but dining doesn't. Perhaps a slip on their part? Here's a cut and past of the first paragraph.
Make sure to pack your Disney Rewards Visa Card whenever you go to a Disney Theme Park. You're entitled to some special perks, like discounts on select merchandise, dining and tours, an exclusive Character Meet 'N' Greet event and more.