Nitro JavaScript Engine: Apple claims that the new engine will allow the Safari Web browser to run Java twice as fast.

iTunes Home Sharing: The update allows users to stream their iTunes library from a computer to any iOS 4.3 device over a home Wi-Fi network. That includes music, videos, audiobooks, and podcasts.

Airplay improvements: Airplay lets users stream audio and video from their iPhones and iPads to the Apple TV. The update streams video from the photos app on iOS devices, allows third party apps to support Airplay video streaming and enables slideshows from iOS devices using the Apple TV's transitions.

No word yet from Dalrymple on when to start frantically refreshing iTunes.

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