Among other things, the new system turns iPhones and iPads with 3G cellular connections into personal Wi-Fi hotspots, so you can share the connection with computers or other devices—if your wireless carrier allows it. Many charge additional fees for this service.

Apple also announced new software designed for the iPad, including a $4.99 version of iMovie for video editing and a $4.99 version of GarageBand, its music recording and editing software. GarageBand includes instruments that can be played by touching the iPad 2’s screen, and it can even sense whether you’re tapping quietly or banging on the “keys.”

The company also said Random House became the last major publisher to agree to sell its titles in Apple’s eBooks store.


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