Apple's forthcoming iOS 4.2 update may not be available until the end of November, amid reports that the firm is still addressing bugs in the operating system.
The update was originally expected on 12 November, although Apple had never confirmed a release date.
Users will have to wait until 24 November at the earliest, according to The Daily Telegraph, as developers have reported a bug in the software that causes Wi-Fi connection problems.
V3.co.uk contacted Apple to confirm the reports, but the manufacturer declined to comment.
IOS 4.2 will have over 100 new features, including enhanced enterprise integration, stronger security and new management capabilities to help make the device appeal to business users, according to Apple.
Other key improvements include multi-tasking and the ability to organise applications into folders.
Users with multiple accounts will be able to see messages in a unified inbox, organise messages by threads and open attachments in third-party apps, Apple said.
The AirPrint feature allows files to be sent directly to a printer on a wireless network, but Apple has reportedly removed support for Mac and PCs.
At present it looks like users will be able to print only from certain HP devices equipped with the latest firmware.
IPad owners will also be able to wirelessly stream videos, music and photos to the new Apple TV using the AirPlay feature.
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