McDonald's quietly puts DDB Chicago in charge of fall ad campaign

Big changes are afoot at McDonald's (NYSE: MCD) — at least from a marketing standpoint. Sources report that Leo Burnett, the agency that created the high-visibility, heavily-animated revamp of the "I'm Lovin' It" campaign, will now be taking a seat in the back of the marketing bus as DDB moves into the driver's seat to orchestrate and execute much of the burger chain's fall brand advertising...