Dunkin’ wasn’t alone in making a new hire right after the Labor Day holiday as Starbucks announced on Wednesday that Board member and former Sam’s Club executive Rosalind Brewer had been appointed to the position of President and Chief Operating Officer. Brewer will assume the post on October 2. McDonald’s this week announced a deal with Coca-Cola where its ready-to-drink McCafe Frappes will be sold in supermarkets and grocery outlets beginning in 2018.