Publix is testing out a new, luxury format for some of its stores. In January, the grocery chain opened a new 55,701-square-foot store in Wesley Chapel, Fla. The store, which is larger than Publix’s usual store size of 45,000 to 50,000 square feet, has a large selection of foodservice items, upstairs and outdoor seating, and an adjacent Publix Liquors, according to Grocery Drive.