Dunkin’ Donuts launches a refreshing new cold coffee choice — the Sweet & Salted Cold Brew   Ring in Spring with Dunkin’ Donuts’ New Vanilla Truffle Donut, Shamrock Sprinkle Donut DD Perks® Rewards members receive 20 bonus points on any hot or iced coffee purchase CANTON, MA, 2017-Feb-28 — /EPR Retail News/ — On the…