According to an article from AppleInsider, Apple may have chosen to delay the full blown launch of AirPrint, due to last minute stability and compatibility issues. As a result, the release of iOS 4.2 – scheduled for this Friday – may only offer support for a limited set of printers.
You read correctly, despite Steve Jobs’ recent demo of the new iOS 4.2 wireless printing capabilities, the AirPrint feature for printing from any iOS device to any printer connected to a Mac or PC seems to have been delayed for now.
In other words, iOS 4.2 seems to only be able to print wirelessly to printers that support AirPrint natively, namely the HP Photosmart Premium Fax e-All-in-One Printer (C410), the HP Photosmart Premium e-All-in-One Printer series (C310), the HP Photosmart Plus e-All-in-One Printer series (B210), the HP Envy 100 e-All-in-One Printer Series (D410), and the HP Photosmart eStation Printer series (C510).
For native Mac and Windows support, regardless of the printer maker and/or model, iOS users will apparently need to wait until iOS 4.3 is released, quite a disappointment for most iPad, iPhone and iPod users eager to be able to finally be able to print directly from their favorite mobile device.