Apple has released iOS 4.3 beta 2 as build 8F5153d after 7 days of iOS 4.3 Beta Build 8F5148b released. As same as iOS 4.3 Beta Build 8F5148b, iOS 4.3 beta 2 only available to developers who enrolled in the iPhone Developer Standard or Enterprise Program. This includes to iOS 4.3 beta 2 for mobile iOS devices including iPad, iPhone, and iPod touch, in addition to an update for Apple TV and iOS SDK 4.3 beta 2.
iPad multitasking gestures discovered in iOS 4.3 Beta Build 8F5148b won’t be include when iOS 4.3 available to public. This features are for developers to preview and feedback for how these multitasking gestures work with apps.
You can download iOS 4.3 beta 2 for iPhone, iPad, iPod touch, Apple TV and SDK if you’re a developer from the iOS Dev Center