Amazon has announced an update for its GameCircle and Whispersync for Games services for mobile gaming apps today, which introduces iOS support. That means that Amazon's GameCircle, which offers achievement tracking for mobile apps, and WhisperSync for Games, which makes it so that a mobile gamer's progress goes with them as they move from device to device, will all now be able to work on both Android and iOS hardware, including the iPhone and iPad.More...