Dunkin’ Donuts unveils its 2017 holiday lineup   Arriving by November 20: New Frosted Sugar Cookie Donut, Gingerbread Cookie Donut and Snowflake Sprinkle Donut Peppermint Mocha and Brown Sugar Cinnamon flavored coffees will return for holidays, along with a special new festive holiday “Joy” cup design CANTON, MA, 2017-Nov-11 — /EPR Retail News/ — As…