Having launched some time ago, now a GM version of iOS 4.3 is available for developers. This is very interesting, because there is a possibility that we will be able to do any development for the iPad, iPhone, or iPod touch. So, we can take part in developing the Application of the OS.
Unfortunately, we still have to wait a bit to be able to try this OS, because this OS will be launched officially on March 11, 2011.
Quite a few applications that can be activated by Apple ID in the app settings, then go to the iPod toplug into the desktop of your library and starts treaming music, podcasts, audio books or video.There is also support for playlists, which provides the entire music library and can be shared wirelessly, with the possibility to play the media on the device itself.
Via: Dev Center