New Belgian Waffle Breakfast Sandwich at Dunkin’ Donuts restaurants nationwide   CANTON, MA, 2016-Aug-28 — /EPR Retail News/ — Today, August 24, is National Waffle Day, and what better day for Dunkin’ Donuts to unveil its newest breakfast sandwich selection, the Belgian Waffle Breakfast Sandwich. Arriving at Dunkin’ Donuts restaurants nationwide on Monday, August 29, the new Belgian…