This will be the third beta of the new iOS 4.3. New features that have been released of this new firmware for iPhone and iPad users include:
– Personal Hotspot: If you have a iPhone with the 3G you can now share up to five devices over Wi-Fi if you so choose to share you internet connection.
– Third-Party AirPlay: Now Third-Party applications are able to stream video.
– iPad Lock: Now you have the ability to switch between mute and orientation lock on the iPad.
– iPad multi-touch : New multi-touch features new gestures commands to work with ease on the iPad.
These are just the known features that are included in the beta so far. More are expected to come with the final release of the new iOS 4.3 known also as 8F5166b.