The release is build 8C134, and available for all iOS platforms including the iPhone, iPad and iPod Touch.
Coming with 4.2 is AirPlay, which will give iOS owners the chance to stream content from their devices to an Apple TV and then pick up the content on their device again if they leave the room.
Additionally, 4.2 should bring AirPrint, Apple's new "powerful new printing architecture that matches the simplicity of iOS—no set up, no configuration, no printer drivers and no software to download."
Finally, 4.2 should bring multi-tasking, iOS folders, GameCenter and enhanced enterprise support to the iPad.
Written by: Andre Yoskowitz @ 2 Nov 2010 22:51