The next point release of Apple's iOS has been made available to developers along with a pre-release version of the Mac OS X operating system that includes the upcoming AirPrint feature.
iOS 4.2, which replaces version 3.2.2 of Apple's mobile operating system, was announced and demonstrated by Apple at its September music event. It's notable in that it will finally bring multitasking, folders, Game Center, AirPlay, and an overhauled version of the built-in e-mail client to iPad users--all features iPhone and iPod Touch users have had since late June.
This version of 4.2 is likely the first of several betas that will be seeded to developers ahead of a public release. At its music event, Apple announced that 4.2 would be made available as a free software update in November, leaving the next two months for bugs to get squashed.