Wendy’s Co. The Dublin-based fast-food chain expects to be serving its highly anticipated Pretzel Bacon Cheeseburger ($4.69 ) nationwide by July 4, 2013.

It will be offered all summer long.

The limited-time offer, which has been in the works for more than a year, is Wendy’s highest-testing burger to come through its product development pipeline since it recommitted to its development efforts in the last several years.

Described as a pub-style cheeseburger, the key feature is (obviously) the pretzel bun, made using the same process used to make soft pretzels. Other ingredients include a nine-green spring mix, red onion and tomatoes, both a warm cheddar cheese sauce and a slice of cheddar cheese, a sweet and smoky honey mustard sauce and thick, applewood-smoked bacon all on a quarter-pound burger.