To make sure it keeps up with an ever-competitive fast-food industry, Atlanta-based Arby's has introduced a new sandwich to its menu. The Ultimate Angus Philly, the third sandwich in the company's Ultimate Angus Beef line, features oven-roasted angus beef topped with melted Swiss cheese and fire-roasted green bell peppers. Arby’s introduced the angus beef to its menu nationwide in March 2011. The industry is trying different products to keep diners, many of whom are watching their wallets because of the economy, coming in.