Dunkin’ Donuts announces return of classic pumpkin coffees and baked goods along with new maple-flavored menu this autumn   Classic Pumpkin coffees and baked goods returning on August 28, along with new Maple Pecan coffees, Maple Sugar Bacon Breakfast Sandwich, Pumpkin Cream Cheese Spread and Festive Fall Donut CANTON, MA, 2017-Aug-16 — /EPR Retail News/ — Dunkin’ Donuts is doubling down…