We had written about Wi-Fi Sync in May this year. This is a pretty neat application that lets users to wirelessly sync their iDevice with iTunes over a Wi-Fi network.

Despite the rave reviews that the application received even before launch, the app was rejected by the Apple App Review staff because of "security concerns". The app has since then been exclusively available on the Cydia App Store for jailbroken iPhones.

Wi-Fi Sync is developed by Greg Hughes, a student at University of Birmingham. Following the successful launch of his app in May, Hughes has now announced that the application will receive a major update in December. The new update will enable users to remotely sync their iPhone with iTunes over a cellular data connection. According to he Wi-Fi Sync website, the jailbreak app will allow users to sync their iDevice with iTunes over Wi-Fi, 3G, EDGE and/or VPN.

Apart from cellular data compatibility, the new version of the app is also expected to come with other features such as support for retina display, a sync button on the iDevice, an option to disable automatic backups for wirelessly connected devices and also the ability to run the app on startup.

Despite the high sale price of $9.99 on Cydia, Wi-Fi Sync has been quite successful since it was launched. Greg Hughes announced the sale of the 20,000th app back in September. This success has underlined the demand for such a functionality that has unfortunately not been made available to non-jailbroken users so far.

Wireless syncing has for long been seen as the logical next step for Apple to offer and we're hopeful that Apple will introduce the feature in the future. Until then Wi-Fi Sync, especially v2.0 will be another reason for users to jailbreak their iPhone. What do you think?