Apple may limit the usefulness of its recently announced AirPrint technology to iOS devices according to one report.

Available to developers since September in beta, AirPrint automatically finds printers on local networks and can print text, photos and graphics to them wirelessly over Wi-Fi without the need to install drivers or download software.

AirPrint will be available to iPad, iPhone and iPod touch users as part of the free iOS 4.2 software update.

MacStories, a blog devoted to Macs, notes: "We have been told from a few Mac developers that a few days ago Apple removed all the references to printing via OS X 10.6.5 and PCs both from Readme files and other online documentation posted in the iOS developer center."

"It seems like all that's now mentioned in the release notes are the aforementioned HP networked printers, as if the shared printing option never existed. See here, here and here."

Apple's iOS 4.2 update is likely to be made publically available this week, possibly as early as today.

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