evidence: Beginning October 10, the highly anticipated sandwich will be sold for a limited time at McDonald’s US locations. The Chicken Big Mac is similar to its beefy sibling; however, it replaces the two burgers with two tempura chicken patties. It also includes the signature Big Mac sauce, pickles, shredded lettuce and a slice of American cheese. [...] As a result, companies have released value meals, new items and special promotions to ramp up sales. McDonald’s is currently testing a new burger in Canada, called the Big Arch, that has two patties, cheese, crispy topping and tangy sauce, which could be brought to the US if successful.