 Similarly, McDonald's Canada recently began offering free coffee for a week during Tim Hortons' "Roll Up the Rim to Win" campaign.Taco Bell's new value menu Dollar Cravings was instigated in reaction to McDonald's and Wendy's value menus.On August 26, 2015, Burger King released an open letter to McDonald's proposing a joint promotion for Peace Day called the "McWhopper", a combination of the two restaurants' signature burgers.