Today is National Donut Day and in honor of this day, Dunkin’ Donuts is giving away a free donut (with the purchase of a beverage). According to this article, Dunkin’ is also launching a two new flavors for the summer; one being a key lime donut with lime filling and a crumble on the icing; the other is a lemonade donut. Krispy Kreme is also giving away free glazed donuts as well for participating areas. Interestingly enough, they have creates two Key West inspired donuts; one is a key lime cheesecake donut and the other a key lime cake donut.In other news, Dunkin’ Donuts is soon to realize a donut sandwich. You’re looking at two thin slices of glazed donuts (or one split in two) coupled with bacon and a fried egg. The calorie count is 360 per serving. Not apt for those watching their waist, or their sugar. What’s your favorite donut of all time? Are you brave enough to try the new donut sandwich?