Shazam today announces significant feature updates on the App Store, many of which take advantage of iPhone 4 features and iOS4 operating system. The new features are applicable to all Shazam versions for the iPhone and iPod touch – Shazam Encore, Shazam (Product) RED Special Edition App and the Shazam free App. The company is also introducing a new annual pricing option for its premium offering. Support for the multitasking feature on ...