The biggest mystery on Rockville Pike right now: What’s going to happen to the White Flint Mall? Three years have passed since the announcement that White Flint would be replaced by an open-air mix of retail, restaurants, offices and living space. Bloomingdale’s closed in 2012, followed by a two-year parade of departures that left only three survivors: Lord & Taylor, Dave & Buster’s and P.F. Chang’s. So what’s next for White Flint? Nothing has been announced yet — not even a demolition date — but we’re here to tell you what we know. We’re hearing that Wegmans — the uber-popular grocery store with the cult following — has signed a deal to open at White Flint in 2017. The new store would be roughly triple the size of a typical Giant or Safeway, leaving plenty of room for the specialty departments that Wegmans fans rave about: Sushi bars. Olive bars. Coffee bars. Cheese bars. Fresh pizza, gourmet sandwiches, restaurant-worthy prepared foods, top-notch baked goods, eye-popping bins of bulk candy… we could go on, but we’re getting hungry. Wegmans, which opened a store in Germantown last fall, has been trying for years to move into our area. Looks like it’s really happening this time.