Apple iPad and iPhone owners can now download iOS 4.2. The release adds a number of new features, including AirPlay, AirPrint, and access to Find My iPhone. It also brings some of the previously missing iOS 4 features to the iPad.
The release had been expected earlier, but Apple made some additional changes to the 4.2 gold master after developers complained about Wi-Fi connectivity issues. Thus, this release is actually iOS 4.2.1.