They are probably referring to Veal, which is the meat from a calf or young animal. Note there are a number of controversies the other way also, where people oppose eating young cow because of the practices surrounding raising veal.
No, the beef you buy at Whole Foods or Safeway has generally been harvested from steers slaughtered at 1-2 years old --- it's all young. Specialty purveyors will sell you beef from much older cows, which is less tender and has a much deeper flavor (there's also a high-end thing right now about eating beef from dairy cows).
