CANTON Mass. Dunkin' Donuts said it planned to introduce several new, all-day menu items when it unveils its latest "new concept" location in Philadelphia on Friday. The new items include a line of flatbread sandwiches filled with a choice of three cheeses, ham and cheese, or turkey, bacon and cheese. Personal breakfast pizzas, topped with egg and cheese, or sausage, egg and cheese, also are being rolled out.
In addition, the chain is featuring warm baked