Apple has seemingly leaked a forthcoming feature of iOS 5 which the company will preview on Monday at the WWDC 2011 opening keynote. The feature which was uncovered by a Mac Rumors reader suggests that the next major operating system update for iPhone, iPad and iPod touch will allow auto-downloading of apps.

The slip-up appeared briefly on Apple’s App Update page but has now been removed, the line of text reads:

Or if your device has Automatic Download enabled for apps, your updates will download to your device without having to sync.

Currently app updates on iOS must either be synced via iTunes or manually updated through the App Store.

On Monday, June 6 Apple will kick off its annual Worldwide Developers Conference in San Francisco. WWDC 2011 will run from June 6-10 and the opening keynote will be hosted by Apple CEO Steve Jobs. The company has already outlined that it will discuss iOS 5, iCloud and Mac OS X Lion. World of Apple will provide full coverage from San Francisco during WWDC 2011.