It seems to be growing increasingly difficult to keep device announcements under wraps these days, and Huawei has become the latest victim of some premature exultation. An advertising board at Barcelona Airport has started displaying a handset called the Ascend D quad, which the company will most likely make official at its upcoming MWC press conference today. Its name suggests that this will be the quad-core smartphone that was rumored a couple of weeks ago. Huawei is adding in an extra bit of relish by describing as "the world's fastest smartphone," while the capacitive Android keys up front remove any doubt about the operating system.