I just found this info…not sure what it might be but for those with little ones you might want to mark your calendar.  I will update if I get more info:
From the site:
Join Huggies® and Gerber® on August 28, 2010 at participating locations beginning at 11AM for additional coupon savings (while supplies last) and details on how you can get a free Publix gift card and a chance to win $5,000 of free groceries.