This undated image provided by Burger King shows the "Big King" sandwich.
Burger King Facebook
Burger King posts images of its "rebranding" on its Facebook page.
Marcos Oleynick, 36, protests outside Burger King as part of a nationwide strike by fast-food workers to call for wages of $15 an hour, in Los Angeles, California August 29, 2013.
John Minchillo / AP
Demonstrators in support of fast food workers march towards a McDonald's as they demand higher wages and the right to form a union without retaliation in New York City, on July 29, 2013.
Burger King is offering delivery in more cities.
Kevin Lamarque / Reuters
Burger King will introduce a brand new french fry recipe in all of its North American locations
Michael S.Williamson / The Washington Post / Getty Images
A Burger King in Olney, Md., advertises for delivery drivers, March 7, 2012.
Steve Forrest / Insight-Visual / Panos
UK. London. McDonald's restaurant in Holborn, central London with the new interior decor.
Tracy A. Woodward / The Washington Post / Getty Images
DeAngelo McDonald with his two youngest children Kristina, left, 1, and Elijah, right, 2, stand outside their home in Southeast on Sept. 24, 2010. DeAngelo McDonald, a Metro bus driver and father of six who earns $54,000 a year, bought a $330,000 house in 2008. Loan officials noted in McDonald's loan file that he could only afford a house priced up to $152,000.
Danny Kim for TIME
Burger King's new $13 Pizza Burger
Keizo Mori / Upi / Landov
In a marketing tie-up with Microsoft, Burger King's 12 stores in Japan have launched the Windows 7 Whopper
Mike Brown / The Commercial Appeal / AP
McDonald's employee Antonio Cathey during a protest outside a Kentucky Fried Chicken in Memphis, Tenn., Dec. 5, 2013.
The McDonald's Blitz Box
RIC PIERMONT / AFP / GettyImages
A worker shows the McBaguette, the French "baguette" sold by US fast food giant McDonald's in their French outlets on April 10, 2012 at a McDonald's restaurant in Paris.
Richard T. Nowitz / Corbis
McDonald's announced Thursday it was removing angus burgers from its menus.
Stefano Rellandini / Reuters
People queue for free meals outside a McDonald's fast food restaurant in downtown Milan October 16, 2012.
Uriel Sinai / Getty Images
Fast food is on the rise in Bangalore, where the economy is booming
Michel Spingler / AP
People walk past the fast-food restaurant Quick in Roubaix, northern France, on Feb. 20, 2010
Mario Anzuoni / Reuters
McDonald's Happy Meals with toy watches fashioned after the characters Donkey and Puss in Boots from the movie "Shrek Forever After" in Los Angeles
Erik S. Lesser/EPA/Corbis
McDonald's recently recalled 12 million Shrek-themed glasses because of concerns about the level of cadmium contained in the enamel.
Simon Hayter / Getty for TIME
McDonald's chef Daniel Coudreaut is rethinking the food part of fast food
Chris Hondros / Getty
A menu at a New York City fast-food restaurant gives the calorie counts of the food on sale
A server at the French fast food restaurant, Cojean.
Haruyoshi Yamaguchi / Reuters / Corbis
A man eats a humburger at a fast-food restaurant in Narita, northeast of Tokyo.
Angela Weiss / Getty Images
Khloe Kardashian attends the launch party of McDonald's Premium McWrap at Paramount Studios on March 28, 2013 in Hollywood, Calif.
Spencer Platt / Getty Images
Employees and supporters demonstrate outside of a Wendy's fast-food restaurant demanding higher pay on Monday in New York City.
Frederic J. Brown / AFP / GettyImages
Eduardo Cisneros (L) and Luke Montgomery kiss in front of a Chick-fil-A fast food restaurant in Hollywood as Christian activist Alicia Daberkow (R) reads passages from the Bible on August 3, 2012 in Hollywood, California. Gays and lesbians puckered up in protest Friday, staging "kiss-ins" outside Chick-fil-A outlets across the United States over the fast food chain's opposition to same-sex marriage.
Thomas Coex / AFP / Getty Images
People walk past a McDonald's restaurant on September 25, 2010 at the Champs-Elysees Avenue in Paris.
Adam Lau / AP
The McDonald's Shrek-themed glasses
Chung Sung-Jun / Getty
An employee of McDonald's serves a meal in Seoul, South Korea.
David McNew / Getty
A McDonald's in the South Los Angeles, where the concentration of fast food
restaurants is the highest in the city
AP / Andy Wong
Chinese police officers stand guard near a McDonald's restaurant which was a planned protest site for "Jasmine Revolution" in Beijing, China, Sunday, February 20, 2011
Robyn Beck / AFP / Getty
A family enjoys a McDonald's meal with a Snoopy doll
Scott Olson / Getty
Customers at a McDonald's restaurant
A Japanese ad for McDonald's with the controversial character Mr. James
AP / Andy Wong
Police officers stand watching people gathering in front of a McDonald's restaurant which was a planned protest site for "Jasmine Revolution" in Beijing, China Sunday, February 20, 2011
TED THAI FOR TIME
A new McDonald’s in Times Square will feature a Broadway-style marquee
Mark Peterson / Corbis
A family eats at a McDonald's restaurant in Chicago.
Najlah Feanny / Corbis
An employee rushes to fills an order during lunch time at McDonald's.
FOOD FIGHT: The French are keen to protest against McDonald's, but it doesn't stop them from eating there
JUSTIN LANE / EPA
People gather outside of a Wendy's restaurant as part of a one day strike calling for higher wages for fast food workers in New York, New York on July 29, 2013.
George Frey / Bloomberg News / Landov
An employee puts a lid onto a cup of coffee at a McDonald's restaurant.
Mark Peterson / Corbis
An employee cleans the "Thank You" sign outside a Chicago McDonald's restaurant.