Today Apple released the third beta of iOS 4.3, called 8F5166b, to developers for the iPhone, iPad and iPod touch. This is the third beta release from Apple in three weeks. Details were not immediately available as to what is included in the release.
The first release on January 12th featured the new Personal Hotspot feature which allows an iPhone to share its 3G Internet connection with up to 5 devices over WiFi, and allowed third party applications to use AirPlay for streaming video. It also included a software option to change the iPad hardware switch between mute and orientation lock.
The second beta issued on Jan. 19 was a preview of the new iPad multi-touch gestures, which included four-finger gestures to switch between multitasking operations or return to the home screen. This feature will not be enabled in the final release, but is planned for the future.