Apple has released iOS 4.3 beta 1, the first beta version of its next major point release for iOS, to its paid developers. According to notes accompanying the release, the beta includes a pre-release version of future Apple TV Software so that developers can test AirPlay functionality with their 4.3 apps, meaning that users should be able to send video from apps or websites to the Apple TV under the new software. A prior report also indicated that the Personal Hotspot Internet sharing feature debuting on the Verizon iPhone 4 will make its way to other models under iOS 4.3, although it is unclear whether the functionality is included in this update. Separate beta versions of iOS 4.3 for the iPad, iPhone 4, iPhone 3GS, third-, and fourth-generation iPod touch are available as downloads for paid iOS developers from Apple’s iOS Dev Center.
Update: TUAW reports that the new beta also includes support for new four- and five-finger gestures on the iPad. “This beta release contains a preview of new Multi-Touch gestures for iPad,” reads Apple’s developer page for iOS 4.3. “You can use four or five fingers to pinch to the Home Screen; swipe up to reveal the multitasking bar; and swipe left or right between apps. We are providing this preview before releasing them to the public to understand how these gestures work with your apps. Test them and give us your feedback on the Apple Developer Forums.”
Update x2: Mac Rumors notes that the new beta also offers an option in the Settings app to choose whether the iPad’s side switch acts as a screen rotation lock or as a mute switch. The iPad originally shipped with the switch acting as a screen rotation lock, but Apple changed its behavior in iOS 4.2.