AirPrint is Apple’s wireless printing service. By the time it ships with iOS 4.2, it should be able to send pages from your iPad or iPhone to almost any printer on the same Wi-Fi network, or to certain printers directly (HP ePrint have already been announced). Needless to say, this answers one huge piece of previously missing functionality. (The one it doesn’t answer, and still isn’t answered, is easier file transfer and sync).

Currently, in order to test AirPrint, you need iOS 4.2 beta, Mac OS X 10.6.5 beta, and a network attached printer. Oliver Haslam from the I-Blog had all three so he put together a video, after the break.

For more, check out our complete iOS 4.2 for iPad walkthrough.