Saw this in USA Today this morning:

"Delta passengers at Atlanta's airport today can sample breakfast, lunch and dinner items that will be included in an onboard food sales test this month. Go to the Delta ticket counter near door S-3. Breakfast sampling: 6:30 to 8:30 a.m. ET. Lunch/dinner sampling: 10:30 a.m. to 12:30 p.m. ET."