Apple have released to developers the second beta of iOS 4.3, as well as a new pre-release copy of Apple TV software designed to support the mobile operating system's new AirPlay feature for third-party programmers.
The first beta of iOS 4.3 introduced a personal hotspot control panel, new multitouch gestures for the iPad, and updated SMS alert settings. Resource files accompanying the release also provided hints at a handful of new iPad and iPhone models, as well as a potential "Find My Friends" social networking feature.
Apple has now informed developers that some features present in the initial beta won't make it into the final 4.3 release.
Release notes for beta 2 indicate that the new multitouch gestures will not be arriving with 4.3. The notes state "this feature will not be enabled in iOS 4.3 for customers, but we are providing this preview to gather input on how these gestures work with your apps."
The developer release of iOS 4.3 beta 2 includes mention of a new MobileMe-based Photo Stream picture sync feature, apparently part of a new Media Stream service, and includes versions of a standalone FaceTime and PhotoBooth app for iPad.
Macrumors reports that 3 icons on the beta 2 home screen would appear to confirm rumors that the iPad 2 will have at least 1 camera.
The presence of these icons does not necessarily mean that there will be two cameras, but it would be surprising if Apple doesn't standardise a two-camera solution across its range of iDevices.
Apple is likely to release a few more updates to iOS 4.3 before releasing it to the general public, possibly at the same time that the iPad 2 is announced.