Tomorrow Friday, March 4, 2011, get a Free medium order of Chick-fil-A Waffle Potato Fries®, limit one per customer. Offer available only between 2 and 4pm local time.
And apparently you need to ask for Heinz Dip & Squeeze ketchup with the Free FryDay promotion to get the deal. You can see the full announcement on the Chick-fil-A Facebook site.
Find a Chick-fil-A near you.